There’s a strong tendency for several people in my family to react first THEN think. As a result, my Mom has been on the giving AND receiving end of cutting off family members more than once.
In one case, the family member was (literally) insane, and interacting with her in person caused Mom’s BP to skyrocket. Mom continued to help her out, though only anonymously through intervening family. Face-to-face dealings were almost nil.
That person’s older brother retaliated by cutting off my Mom.

He died without a reconciliation.
When my Mom’s sister died a couple years ago, that made her kids co-owners of a house she co-owned with my Mom. Mom has been trying to divest herself of ownership of that house for decades, so she asked my cousins to buy her out. The middle cousin reacted in a way that I cannot express here without violating the ToS; the other 2 were silent in the face of the unhinged tirade.