<human>: First of all, this is my first serious relationship that have lasted for a year now. I'm very attracted to my girlfriend and we also have a great chemistry. There is one problem however. 

She is very emotionally unstabile, she has the lowest self esteem and can get very jealous at times. She doesn't like that I watch porno when she is away and she doesn't like that I'm talking to other girls, even though I've had some girls I've been friends with from the past. She can end up crying if I compliment her wrong, E.G = Telling her she looks like Megan fox.  She always sees the negative in compliments and things going around her.

Her insecurity goes all the way back to her grandfather, which is a psychopat. He stabbed his own wife with a knife, sexually abused my S.O's father's sister and verbally murdered her father. Her father has then established this Bipolarity, which makes him being very insecure and causing alot of pain on her family. Her father have been going to therapy after having some attempts on both sucide and drug abuse. Her father however doesn't want to harm my S.O, and often leaves to their cabin for some days when the bipolarity is at it's worst just to take some pressure off them. 

Another thing to take in account is that, only me and her family knows this. She is a very bright happy girl in the public, she has never self-harmed herself nor has she done anything to show her "depression" and insecurity to someone.

Enough of that, I need your help Reddit. Even though I try to comfort her and take care of her as much as I can, but it doesn't seems to get better for her. Do you guys have any tips for what I should do and how I should act? 

Sorry for my english, It's not my mother tongue.

Give me the gist of the text in a nutshell
<bot>: My S.O's grandfather has abused her father which have lead to her father being bipolar, my S.O is very affected by this and I don't know how to act, help!