I don't know who Abigail is, because I don't know the name of the story and it doesn't say anything about her, but here are some tips:
Just say what you think of her, ex; nice, (kind), mean, ignorant, sweet, generous, etc.
List which traits you like/don't like about her.
I don't know what the end of act one is either, but if you liked what she did, say what you liked about it, and if you didn't like it, say what was wrong with what she did. then reread it.