What layout would suit ?

No idea how big the shower in the Bailey is, DD is hoping to see one at the caravan show next year so she can try it.    I think when you have "little people" you are possibly more likely to use your own shower more, especially on a serviced pitch.

Having used our van, which has a large walk in type shower, she may well be disappointed with the Bailey!

As the extra towing licence is to be abolished, she could tow our van if we also lend her our car, which would mean they could go a bit further from home........and save a lot of money!

normally I'd suggest you spend a day looking around local dealers for as many layouts as you can find. Unfortunately many dealers are very low on stock, and some are still locking all their vans because of covid. But I'd certainly go look at as many as you can before settling on any one particular layout. You can also still see lots of vans on line but don't part with any money there!