Hi TV !
All I an add to this is the view of a friend of mine who is disabled and travels all over the place with her husband and two young children.
She can't walk and gets carried on and off the plane by her husband and she has told him that if the worst happens, he is to get himself and the kids out and leave her behind.
It sounds very grim I know and I'm sure that the crew or someone nearby would do their utmost to help her, but they've had a "worst case scenario" conversation and it's probably one we should all have even if we aren't disabled.
Obviously the crew have a duty of care to all their passengers, but you just don't know what the situation might be that you might find yourself in and what the crew might be doing.
You and your hubby should probably have "that chat" too.
Sorry for such a depressing post x