How can my mother get into our motorhome?

Hello; My mother has always liked going with us on camping trips. She is now 96 and she broke her hip last year. She can still walk around the house and go out to places, but her days of climbing steps or stairs are over.

I think that she could maneuver around inside our motorhome and there are things for her to grab onto to steady herself. The main problem I see is how she can get into and out of the RV. There are three steps, and I do not think it is safe for her to climb up or go down them. Modifying the motorhome to add a lift isn't an option for us.

Has anyone worked through this issue? Does anyone have any ideas?

Thank you.