Threadhopping: Sure, go nuts. :)
Fourthwalling: If the game allows it, I'm absolutely fine with it. But only if it's allowed.
Offensive subjects: Probably cool, if we're not in touch already about it you may want to ask to be safe.
Hugging this character: Sure, she grew up in a big, affectionate family. She might not want hugs, though.
Kissing this character: Sure! She might shove you and/or Harry might murder you if she doesn't WANT your kisses, but go nuts.
Flirting with this character: Molly likes to be flirted with. And to flirt back.
Romantic interest toward this character: Anyone can fall in love with anyone. That doesn't mean she'll return the favor, though.
Fighting with this character: Verbal fighting a go. Physical fighting usually a go, but get in touch with me so we can coordinate.
Injuring this character (include limits and severity): I am a horrible person. DO IT. (just IM about it so we can coordinate.)
Killing this character: Probably not, but this is dependent on circumstances. If you want to kill her, drop me a line and we can talk it out!
Using telepathy/mind reading abilities on this character: Yes, but she will likely flip out if she finds out, so be prepared for that.
Revealing that character's future or intended fate in the games: If Fourth Walling is allowed or your character legit ICly knows her future, and you think it's going to come up, drop me a line and we can talk about it.
Warnings: Molly is a stubborn teenager with authority issues. BEWARE.
