If someone gave you a monetary gift for your birthday can they have the right to ask for it back?

My toxic mother who decides to creep her way through my life after 20 years gives me a monetary gift but now she is wanting to give it back after she gave it to me 2 months ago. She can't seem to let it go that my dad divorced her 20 years ago

If someone gave you a monetary gift for your birthday can they have the right to ask for it back?
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