Here is a script excerpt from episode 6, in which we get a good look at some aspects of Momoko's personality.
Momoko is in denial about her feelings for the ill-mannered Yousuke, since up to now all three girls have been competing for the attentions of the soft-spoken Yanagiba, on the same soccer team. But Momoko accidentally revealed that she possessed some pictures of Yousuke, the freshman soccer star. Yuri and Hinagiku have teased Momoko about this all afternoon. They suspect that Momoko might like Yousuke a bit more than she's willing to admit. Escaping the teasing, Momoko goes outside, but there she is approached by Shizuka, one of Momoko's classmates...
Shizuka: "Excuse me..."
Momoko: "Oh? What's going on, Shizuka-chan?!"
Shizuka shyly hands Momoko a small envelope.
Momoko: "What? What is this?"
Shizuka: "I'd like you to give this to someone for me. You're the only one I can ask to do this."
Momoko takes the letter.
Momoko: "Could this be... a love letter??"
Momoko is amazed her shy friend is being so aggressive.
Momoko: "Wow! I'm impressed, Shizuka-chan!"
Momoko begins rolling her eyes, and teasing Shizuka.
Momoko: "Wooo-wooo-wooo! Hot-hot-hot!"
Shizuka doesn't seem to mind the teasing. She just looks at her feet, smiling.
Momoko: "So, who is your guy?! Is he someone I know?"
Momoko looks upward, thinking. She realizes she feels like a big sister all of a sudden.
Momoko: "He'd better not be some middle-aged man! Being a quiet, modest person, you could be vulnerable to older men, but don't do it!"
(Momoko uses the word "otonashi" to describe how Shizuka is "quiet" -- but "Shizuka" itself is also a word meaning "quiet". Momoko straight-facedly delivers similar puns on her friend's name twice more in this episode...)
Shizuka: "It's Fuuma-kun..."
Momoko is about to continue giving "big sisterly advice" to Shizuka when it hits her.
Momoko: "WHAT?!"
Shizuka: "Fuuma... Yousuke-kun..."
Momoko's face goes slack. The camera switches for a moment to the neighboring soccer field, where Yousuke has just scored a goal.
Yousuke: "All right!!!!"
Momoko looks very subdued.
Momoko: "Oh... so it's him... so it's... for Yousuke..."
Shizuka's voice begins to plead.
Shizuka: "Please, Momoko-chan... Can you give it to Fuuma-kun?"
Momoko seems as if she wishes she were elsewhere.
Momoko: "What? Uh... sure."
Shizuka: "Really? Thank goodness! Thank you!"
Suddenly Momoko puts up a cheerful front.
Momoko: "Oh, no problem! No problem! You're always helping me with homework and all..."
Shizuka seems to be about to interrupt Momoko... she has something else to say. Momoko finally stops talking...
Shizuka: "I..."
Momoko: "What?"
Shizuka: "I... about Fuuma-kun..."
Shizuka takes a quivering breath.
Shizuka: "Well, I don't know how to put it, but..."
She pauses again.
Shizuka: "...I don't know if he could ever be interested in me... I don't know about that, but..."
She looks shyly downward.
Shizuka: "I just hope that he'll finally notice that there's someone who is interested in him..."
Suddenly Shizuka comes alive...
Shizuka: "Well! Thank you for doing this!"
Momoko seems to have something else she wanted to say to Shizuka... but Shizuka is already skipping away.
Momoko: "Oh, Shizuka-chan..."
Again the camera shows Yousuke playing nearby.
Yousuke: "Not so slow! Get to the front faster!"
Momoko is visibly shaken by all this. You can tell that her brain is working as fast as it can to process this new situation. She can hardly believe it.
Momoko: "You never know what might happen next in this world! Imagine... there's a girl interested in Yousuke!"
Momoko hears a voice from nearby. Momoko didn't realize she'd spoken the previous sentence aloud.
Hinagiku: "Is that okay with you?"
Yuri: "Are you sure you don't mind?"
Momoko looks around, and there on the storage shed roof are her two friends Yuri (Angel Lily) and Hinagiku (Angel Daisy) who have obviously been spying on her the whole time. Momoko is utterly aghast.
Momoko: "What? Oh my God! How long have you been there??"
Hinagiku: "Are you sure you want to go through with this?"
Yuri: "If you felt reluctant about doing this favor, you should have told her right away..."
Momoko is indignant.
Momoko: "What are you talking about?!"
Momoko's two friends speak to her slowly, calmly, as one might address a child who is holding a sharp object...
Hinagiku: "That love letter is for Yousuke, right?"
Momoko: "Ummmm....."
Yuri: "Momoko-san, deep down, I think perhaps you are not happy with that."
Momoko begins to bluster.
Momoko: "Don't talk nonsense! Like I told you before, there is absolutely nothing between me and Yousuke!"
Momoko realizes she can win this argument if she points out something...
Momoko: "Whenever he sees me, he calls me "Momopi" and we get into a big fight!"
Hinagiku: "There you go, that's what I was talking about."
Momoko is suddenly baffled. Momoko has no idea what Hinagiku means.
Momoko: "What?"
Yuri: "That's right! They say that when a couple fights, it means their relationship is strong."
Now, Momoko is about at the end of her patience. She's yelling.
Momoko: "I said there is NO ROMANCE, understand?!"
Suddenly, a soccer ball - WHAM! - hits Momoko right on the forehead. She goes flat down on the ground, in a spiral-eyed daze. Yousuke rushes up.
Yousuke: "I'm sorry! Oh, hey, are you all right, Momo-pi?!"
Momoko, laying there, can only get out a few garbled words...
Momoko: "I... I... I hate you..."
Yousuke doesn't realize how annoyed Momoko is when he calls her "Momopi"... or maybe he does, since he seems to do this sort of thing just to annoy her -- and to get her attention...
Yousuke: "Momo-pi? Hey! Are you okay?!"
Momoko suddenly springs to her feet, murder in her eyes. Yousuke runs.
Yuri and Hinagiku: "Momoko...! Momoko...!"
Momoko is pursuing Yousuke in a figure-eight path while Yuri and Hinagiku watch, amused. Momoko is spewing out a stream of near-hysterical verbal abuse at Yousuke, non-stop. She's done this before.
