She is mad her never been around mom showed up.
She is mad her new man is her cousin.
She is mad that her best friend is a faithless fickle beast who refuses to take responsibility of her own part in making bad decisions and putting her marriage in jeopardy.
She is mad at herself for sleeping with Micheal (husband of said best friend).
She is mad that her never been around useless mother has now gotten her kidnapped.
That is a lot she has endured in a short amount of time that really has her pissed. Most of her past trauma left her depressed sad more so than mad...
We have never seen what really mad Sasha is like before... well maybe that time in the garage... didn't she beat a car or something?