Well, im bigger than he (and likely a lot less flexible) and with judicious wiggling of the seat up, down, fore aft, etc, found a very excellent seating position. As aforementioned, my Brother is bigger still, a fraction taller and 4mor 5 stones wider, and can be accommodated comfortably.
Again, we both huff and puff getting in and out, but our size is nothing to do with BMW city car design. We both suffer the same clambering into a Corsa or Fester or any B segment car. It's an inherent limitation of the type, not a fault of something lacking in the eesigworthy of criticism.
But again, criticising a small city car for being a small city car is an odd passtime.
The MY is undoubtedly the right car for your lass, which makes it call the more strange that she even fleetingly considered a small city car. Criticising an inappropriate vehicle for not being something it was never intended to be is just silly.
One of the reasons for buying a camper conversion instead of a motorhome is that is still just about usable for the occasional low mileage motoring I do. It's completely the wrong vehicle for it, it weighs 2.5 tonnes, is slow, ponderous, requires circumspection at max height barriers, is a bugger to park, but criticising it for not being a city car more appropriate that type of use would be ridiculous in the extreme. So I don't. I just accept that while it's usable it's really totally inappropriate, and VW are in no way responsible for that.
And that inadvertently highlights an issue with many car buyers. Most go shopping with only the vaguest notion of what the want and try to buy the shiniest most impressive vehicle for their budget. Few seem to take the time to sit down and write a list of essential and desirable criteria and then only consider vehicles that fit the list.
Your lass could save herself considerable time in the future for the sake of 5 minutes with a pen and an old envelope, and head straight for the D segment electric SUVs.