Transportation reimbursement.

along with the answers below I think that transportation for medical care is also deductible on taxes.

Yes, Mom has to pay you. If she is on Medicaid for Health or in home, they will provide transportation but u have to sign up for it.

If you need to charge Mom for anything, it should be in writing, both of you signing and notarized. Better, have a lawyer draw up the contract. If Medicaid is ever needed, you need to be able to tell them where the money when.

From whom? You can ask your mom for reimbursement for your travel expenses and also for her portion of rent and expenses for living in your home.