In 2015 my brother opened up an online bank account that was in my mom's name where I'm the beneficiary. And started sending money from one bank account to another without my mom's permission she contacted the bank and had them delete the online account since she didn't give him permission in 2019 he got guardianship of my mom and February of 2020 went and took all the money out of the account that I was the beneficiary, can he legally do that