Splitting holiday cost, what would you do?

ToneControl

Dad, he hit me!!

jonnyburgo

"I'm sure that was our turnoff you know", " Where?"  "about 3 miles back down this single track road" 

"FFS!"

Smellyfingers

You may find that although it was advertised as three 'double' rooms, one may be much smaller than the other, this may provide the compromise of doing it her way.

Also bear in mind that she may have the additional burden of having to cope with other people's children, who may latch onto her as a novelty from their parents.