I have cptsd and bipolar, my sister has bipolar and bpd.

My grandma who helps me with my sister is in hospital, and my grandpa isn't the best to live with. 

My sister is hording things we need in her room. All of our 'smelly sprays' are gone, we have 2 mugs left, my coloring pencils are int there.  Last week it built up to we had 3 plates left and zero bowls.

last week my grandpa went in there, without my blessing, to retrieve plates etc, and we found food ground into the carpet, we rent, so this is an issue!!

my sister is now attacking me bc she feels i don't do enough to stop my grandfather. But I'm going through a depressive episode, and my cptsd is flaring up, the last thing i want to do is be in the firing line, and besides, if she did what she should, she wouldn't have to be worried about it.

I'm  just at my wits end, trying to validate her emotions,  but not get me in the firing line, and not letting this behavior continuing.

her behavior seems to have gotten worse since she has gone to therapy, and im at my wits end, if i could afford to move out i would.