Would you leave or stay to fix the problem with your siblings?

How do you deal to fix a problem with your siblings? Hide the head like an ostrich and run or face the problem even if it is hard to deal with?

Earlier today my older sister my brother and myself were having a conversation. My sister is married and she was int he house to visit mom with her husband.

My brother was explaining a problem about some issue all of our aunts have (including mom) about some property they own and that they have problems with a certain governmental institution. My brother is more aware of the problem so he was trying to explain our sister about it as my sister has never seem to be interested in the mom problems she has with her property like my mom sister also have, because she says she does not understand much about it like legal stuff or terminology. My brother I have to acknowledge has a difficult temper very harsh and when he gets mad he gets mad. My sister is like the person with balance between my brother and myself. Anyway at some point of the conversation things got heated with my brother for a comment I made. Then my brother got mad and started to criticize our aunts cause my brother do not get along well with them or dislike them fro like 2 years ago, as my aunts call him thief and had treated him bad so my brother does not forget that but my brother has the problem he is resentful for that.

My sister although knows about how my aunts treated him in the past, my sister says she does not have to be mad at them, so my brother gets mad because he says instead of stand up for him, we defend our aunts instead, but my sister is not resentful. So when things got heated my sister did not tolerate our brother temper and left the house so my brother never finished explaining my sister about mom property situation at the beach. When my sister ws leaving the house, my brother told her:

Updates
6 mo
"That is not also a good attitude to leave the house and making a tantrum." and that is what my sister did, she never finished listening about the problem and just left the house angry. My sister had told us she is not interested in listening to the problems my mom has with the property that is why our brother is mom representative.
Would you leave or stay to fix the problem with your siblings?
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