In brief, my sister borrowed a beloved film of mine YEARS ago. If I ever mention the prospect of her returning it she basically implies that I'm being petty and dramatic. She then proceeds to forget to bring it back. She then "returned it" but it was a different film with a similar name, I think bought second hand off ebay or something!
I'm thinking it's lost forever, however her birthday is coming up at the end of November. Considering I am in my 40's, would I be childish to buy myself the film again instead of buying her a birthday present? I wouldn't be so harsh if perhaps her attitude was remorseful about it but the fact that she has dragged this out for years and then made a crap attempt at replacing it has just pissed me right off! Not to mention making me feel pathetic for even asking for it back. Our relationship is good but fairly distant mostly. AIBU??
P.S. Well aware that this is a 1st world problem 