Husband and wife?

My sister has a horrible marriage and many times I have advised on situations that are even repeating and I understand that I would never judge anyones relations ship because I know how hard it is to be stuck. But he beats on her not always but whenever she provokes him and I’ve told her look since you decided to stay just don’t provoke him they seem to do very fine when that doesn’t happen. But she continues to provoke him no matter what and I don’t understand why she can’t just ignore him when she knows the outcome and then I have to come here about all these painful things after again and again. Is this right?
Husband and wife?
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