tbf there is often drama with my DM but not sure what to do this time so posting for some perspectives....
for context, my DF died suddenly but not unexpectedly in December 2016. DM was starting, vaguely, to think about her future when in July 2017 she almost died from a burst aneurysm.
that has left her severely disabled and housebound. I have 2 brothers, but we're all busy with our own lives, so a lot of the time she feels lonely and isolated. she has suffered depression in this period, though doesn't really admit it.
younger DB was working away from home when DM took ill but since he returned about eight months after the burst aneurysm he has been v good with her, and he and his wife usually take her out once a week.
I find getting over harder -I'm further away so it's a 100 mile round trip, I have DD who is eight, and a crazy job
My relationship with DM is also difficult, going back to my teens, but that's a whole other thing.
yesterday I spoke to DM who was upset, because she couldn't get a cable to charge her ipad. chatted briefly, but was trying to get DD her dinner so it was quick
she then phones my DH to tell him about the ipad charger, which he sorts, but then goes on to tell him about how DSIL saw her at the weekend, by herself, because DB was away, and was apparently being mean to her, telling her she's a burden, can't do anything for herself (and to be fair DM can't organise buying a charger cable herself) and there are floods of tears
she told my DH not to tell me this, which he clearly ignored
but she was also adamant she didn't want my DB told because she wouldn't want to come between him and his wife, who is usually lovely .....
but I want to tell DB, partly because I think if DSIL has been a bit mean to her he should know, but more because I don't really believe my DM and I think he needs to call her out on it
DM has history for bursting into tears at the drop of a hat, and for over-egging any kind of drama, and generally playing the victim
so would I be a total cow to go behind her back and tell DB??