Mom gave my brother 60k

AIO i just found out my brother owed 100k in unpaid taxes and my mom gave him 60k to help him out. My mom has the money to give, but I was told that the money my dad left her was for her to live and take care of her home and property. My brother is “supposedly” signing a promissory note to pay her back. I’ve never used my parents as a bank and i’m finding out my brother has been doing it for years. Is it wrong to feel hurt?