Energy Efficient Home Improvement tax credit

When filling out form 5695 it asks if home is owned jointly, My mom is on the deed and the mortgage as we thought if something happens to one of us it would make transition to sole owner easier. Although she is on the deed and mortgage she does not pay any of the mortgage, insurance, taxes, maintenance or bills for the house that is all on me. She has a gross income over the limit so i do not claim her a dependent and she doesnt make enough to have to file taxes per her old CPA ....My question is do i claim as sole owner as i am the one who paid for all the improvements