I didn't use to get on well with DH's sister, as I found her selfish and spoilt with no regard for others and it annoyed me how everyone just pandered to her. She has grown up a lot over the past year or two after leaving uni and is now generally a lot more thoughtful and nice to be around so we get on okay. However she is quite hard work still - a lot bit bossy, likes to take over, quite loud.
The tenancy where she was living was up last week. She was going away anyway so DH helped her to move and said we'd temporarily store her piles of junk belongings in our garage til she found a new place. She needs somewhere to live til the end of October. To date she hasn't looked for anywhere and DH's brother has asked if she can stay with us for two months. She is 'on holiday' (staying with in laws) and 'doesn't want to think about it'.
DH would say yes in an instant. I wouldn't mind for a couple of weeks but two months? With no contribution to bills? (DH refuses to ask and I doubt she'll offer) DH and I are having major relationship issues. I am on antidepressants for depression and anxiety. Work is hugely stressful as I'm being bullied and looking for a new job. I know SIL and she has no plans or job for October after her placement ends and it may be difficult to get rid of her. But in laws will all think I'm horrible if I say no.
AIBU to say no to this?