How do I convince the Medicaid caseworker that Mom did not give money for the purpose of getting on Medicaid?

My Mother gave two $1000 gifts just over 3 years ago strictly to charity, not to me. The gifts were to local charities: one for a scholarship fund for a local college. The other gift was for her local church. Mom hates getting on Medicaid. In fact, she refuses to discuss the issue with me.She may need Medicaid in the next few months, as she is in a nursing home.