I have a Ford Edge.  My youngest brother has mobility issues.  One day we tried to see if he could get into my Edge any easier than what he was riding in now.  It was not any better. On my Edge, the seat sets in quite a bit from the door.  That was not helpful for him to slide in.   

I agree with Greg.... they just needs to go look at vehicles, and see if they can find one that she can get into easier.