If jobs were really like hens teeth in the north, then why do we always have hardly any applicants and even fewer suitable ones for permanent office and lab technican type jobs that are £20k ish pa full time permanent public sector roles with pensions, flexi time, family friendly policies?
Any tourist area, hotels, restaurants, cafes etc will want extra temporary staff over the summer and hotels will often come with accomodation provided if you are not in a tourist area. She needs to find out which are the appropriate temp agencies and get applying for whatever she considers herself suitable for.
Festivals also always want runners, security and catering staff and it pays above NMW (£8 ph is the usual minimum).
The fact is that the OP cannot afford to accomodate her DD for free so the DD has to work and contribute. And even if she could afford it, it will do the DD no good in the jobs market if she does nothing else worthwhile while at uni.
I did my degree part time, which meant 10 hours contact time a week while I was working 30 hours a week in my full time job and I graduated with a first in a STEM subject. I simply do not believe that students do not have time to attend uni, study and work too, in addition to sleeping an socialising.