Hello, My Mom Was Prescribed Vagifem Tablet 10 Mg. For

Hello, My mom was prescribed Vagifem tablet 10 mg. for dryness. My mom is 57 yrs. old and can run circles around me on a daily basis and since she started taking this, she seems depressed. She doesn't want to get out of bed and has no motivation....that is not my mom at all. She is having headaches, nausea and would like to know if she can stop taking it or if she needs to taper off this medication. Can you help me answer this question? Thank You! Tura