Mother is selling home after loss of husband. Profit will repay family member for funeral expenses and moving. How will this affect her Medicaid?

What documentation does she need to show she borrowed money from sister-in-law to pay husband's funeral expenses. There is little equity in home. She is selling & moving closer to family in another state. She is vision impaired. She is still able to live independently but unable to drive. She only recieves less than $1100 month social security so will likely need to find subsidized senior housing.