Well I wanted to use a stronger word than idiot but thought It might get taken down.
Anyway my dsis is being ungrateful, awful and horrible to our DM.
Quick background Dsis has 2 children under 2. Struggles with anxiety. Has a dp and been in a long term relationship with them.
DM helps both of them so much. Babysits, goes round helps with housework. Our parents help them with DIY and so much other stuff. Dsis rings them and DM drops everything to be there. DM never asks for anything in return.
So here is the incident. Dsis partner has bad mouthed our DM. Dsis told her what he said, she then went back to her DP and tell them our DM knows what he said. So basically Dsis is stirring it up to get at her DP. This is not unusual of her tbh.
DM is extremely upset, crying and don't know what she's done wrong. The DP hasn't apologised to our DM. Dsis thinks our DM is being unreasonable because she won't really speak to her DP (don't blame her) and claims she is being awkward. So Dsis has now turned against our DM. Our DM has literally done nothing wrong.
Now I'm in the middle. I agree with our DM and just want to shake Dsis and tell her how ungrateful she's being towards our DM. DM is basically a counsellor to Dsis (not healthy me and DM know). Without our DM she would be in such a really bad place.
What do I do because if I have a go at my sister then eventually DM and her will make up and then I'll be left looking the bad guy. Or do I just be quiet?