Moms share of cost for medical?

So my mom receives a pension from my father who passed. It’s 1500. They want to do a share of cost for her nursing homes of 1400. She had covid and was sent there to recoup. I use the pension to pay bills and the house. So it’s not like I can just give it to them. Is there a waiver ? Or can I have them recalculate the share of cost ? Or have them offer me another option. Her other insurance ran out. So that’s why they put her on medical.