I could go into a long back story about MIL behaviour, but the short version is that she has always been incredibly unpleasant towards me and has always viewed me as difficult due to differing viewpoints, and our relationship is strained at best because of this.
I have told MIL that due to multiple physical health issues meaning that she is sometimes unsteady on her feet, sometimes very lethargic and falls asleep and struggles to bend so can't pick up DD (2), that she cannot look after DD anymore on her own (FIL is sadly deceased). Alongside this she has also stopped managing her home, so it is really cluttered, and when we last went there was a pair of scissors on the floor that she hadn't noticed, and a packet of tablets on a table DD could reach. She hasn't put up a stairgate despite my asking, and despite her physical health meaning that if DD got up the stairs she wouldn't be able to safely get her back down again, as DD struggles with stairs still.
She is blaming our past difficult relationship and saying that I am being stuck up and 'ableist', I feel like I am, quite fairly, safeguarding my DD against danger.
Genuinely looking for advice here.
YABU - Let MIL carry on looking after her
YANBU - You are right to stop MIL from looking after her