I want to buy my girlfriend faridun pack but she has some issues

I want to buy my girlfriend faridun pack but she has some issues. She bought the game from steam but her epic account was different (same email but different account). She merged her accounts and bring her coins the account she didnt want to play (steam). I want to buy her faridun pack from steam but if steam will give the pack to account she dont want she will be upset. Can anyone help me?