How could my high school age granddaughter get her new wheelchair up the stairs once the school bus drops her off?

They are waiting for a ground floor apartment to open up, but in the meantime she’s going to have to get her wheelchair up three flights of stairs (or maybe find an alternative place to stay until somebody is able to help her get home). No family members are available to help, and her mother works that time of day. We are looking for creative ideas!

Thanks in advance!