Abby,
It sounds like the type of wheelchair you are talking about is a "transport" chair. It's used mostly for brief periods like going in and out of buildings and if someone can't push a chair themselves. They are made light weight so they can easily be placed into car trunks and things. There are many different types of wheelchairs out there. Look around on the internet, you'll be surprised what's out there at a good price.

Scooters and mobility chairs are great, but as "nurse" said most insurance companies will pay or help to pay for them, but nobody pays for lifts and ramps to get in and out with them. Even the lightest ones can be impossible for someone with MG to lift!!

FYI, a rollator is designed to assist in walking, (it is a walker). Assistive devices qualify you!!

Good luck finding something that will meet your needs!!

Rachel