friend family trouble, not the typical relationship question Options

[frstff]

i am a guy

this might not be hte best place to post this, since most of hte people here are teenagers, as i'm assuming, and this would be an issue with an adult, not another teenage guy/girl. but i'm looking for each and every suggestion.

i have a close friend that i really care for...and she's having big problems with her parents, specifically her mom. she is a damn hard worker. 4.0, bunch of hard classes, work, sports, always studying, etc. so, shes always stressed out...believe me, everyone tries to tell her to take it easy, but its jsut her nature not to. stress and stuff she can deal with, but at home her mom is always bitching at her. she feels like shes never good enough for her, and that her mom doesn't trust her. everything she does for her mom, somethign bad happens, her mom always finds an excuse or something to yell at her about. she is also a hypocrite, which just angers me. enough for me to think "what kind of person is this" whenever she tells me about it, it really affects me because i think i am powerless to do anything about it. frankly, no one should have to go through this, and i dont know..i just want to help her work it out. senior year is coming and i'm just afraid she wont be able to handle it all. her parents are also convinced theres something wrong with her because she works so hard...and is always stressed out..and think she doesn't have to, but in reality she does. she is a good student, doesn't go out often except to do things she needs to. i've thought about the exaggeration part, but after witnessing myself, believe me, its not exaggerated. i hate hearing her talk about it because all i can do is say stuff like, be strong and all that stereotypical bullshit... i dont know what else to do...

I hate to say she has a terrible mother, but from what i see its true. I just dont know why her parents think she is such a terrible person. she is definitely not.
And its getting worse. perhaps she'll just have to wait to go away for college if she can. any suggestions i'll take in account please. i am specifically lookign for things that SHE can do, not me. I really would rather not go...and try some drastic thing because it IS her mother, and i do not know her, and it just...wouldn't be right, you know? it'll probably make it worse if I did something, but if i have to i will. i can't just stand here and watch her suffer so much. thanks.

if you dont want to post it here please email frstff@gmail.com

--edits due to responses--clarifying purposes---
she is a really good student, but her standardized test scores are above average but not good enough for her dream school. her parents think of it like this - "she studies and works so hard but she isn't getting anywhere. maybe somethigns wrong with her"

i've thought about the overprotective part. but it is WAY too overprotective and i mean, does her mother have to be mean to her? one time we went someplace that her mother allowed her to go, only to receive a call from her later..her mother screaming in the phone to make her go home (i can hear it) for no reason at all. she cried then and there. her mom seriously thinks shes doing drugs. she isn't lazy AT ALL. it just doesn't make sense to me..i dont know what i should do...or what she should do.