My sil has been in possession of an antique rug for quite some time, she has recently renovated her house and finds she can't accommodate it any more. It was left to her by her husband's family, it is very nice and she has offered it (with her husband's full consent) to my husband (which is nice of her) and myself to make use of. We have decided to put it in one of the guest bedrooms as it would like there the nicest. My mil has had a strop about this; saying that we really should put it in the living room as she does not like the carpet we have there.
AIBU to tell her -in a nice way- to mind her own business?