For my MIL we bought a handle that fits into the lock hoop on the door pillar. That meant she could hold the dash and the handle to get out. It really helped. Link is here
Briliant - thanks John. Found one on A***** for less than a tenner!
Paul Costock, UK Plus Four 75th - Furka Rouge - Pip Disco 5 Teddy - 17h1 Irish Draught cross