Regarding an annuity, when we started the annuity with $25,000 or my mothers money, which was supposed to ...?

Regarding an annuity, when we started the annuity with $25,000 or my mothers money, which was supposed to be in her name for myself and 2 siblings, it was put into my brothers name. Can this be transferred to my mother? What penalties will we incur? Is this even possible?