When you need a shoulder to cry on, please come to the forum. Very sad, touching story. You had previously asked about encouraging your mother to stop pioneering and deal with this. It sounds like pioneering is her choice to avoid dealing. Be supportive of the rest of the family and be ready for mom to really have a breakdown.
If you cannot handle all the drama, then don't try to. Just say you are there to listen, not able to solve all their problems.
Find some peace, a way to relax. Consider a vacation or a weekend getaway.