My Mum is elderly and depending more and more on help. I do what I can ie washing and shopping for her. My SIL washes my mums legs once a week. My mum was taken Ill recently and I slept in a chair for a few nights then my SIL slept over 2 nights. I’ve since found out that my mum pays my SIL for everything she does including the sleeping over. Yet she tells everyone she does it out of the goodness of her heart, I’m really pissed that she would take money from poor old lady. AIBU? Thinking you don’t charge your own mother/mother-in-law