Happy to be told i am being unreasonable. Ive had a bad day so not in the best of moods. Ill explain the situation and a bit of background about my Dsis.
So me and my DS collect pokemon. I collected as a child and so did Dsis. The cards were stored in our DM loft. I do t remember how I got much cards if DM gave them to me or I asked to get them. I dont know if Dsis went in the loft first. What I do know is that I don't have all the cards I know I had and pretty certain Dsis has them. I cant prove it though.
Anyway, it's DS birthday coming up and she has tons of original cards. She doesnt collect and doesnt really care much about them. I asked if a could buy a few from her for DS for his birthday.
She has said no she wants them. I asked why since she doesnt collect. She hasn't responded. I think its so she can sell them all for money.
Now for some background.
Ive gifted things to her in the past I.e furniture for my nephews. It was expensive stuff but as shes my sister and they are my nephews I said dw. Even though I was a struggling single parent and she was not and quite comfortable. I could have done with the money but it wasnt about money to me. I then found out to tried to sell it all to make a profile from my generosity. So for context that is the type of person she is. There have been other things too.
Aibu to be angry at her for not even selling us a couple of cards out of her hundreds (even which I think some are mine anyway) for her nephew. I was willing to pay a bit for the cards too.