Every University has hardship funds and support for skint students, they wont help with fees, as student loans cover those, but for living costs.
They can help with accomodation, living costs, the lot. Your kids can even interrupt a year and work and build up funds ( Gain a place and take a gap year working).
Don't take this the wrong way OP, but especially as you never went to Uni, you have to understand MANY students turn up and flourish at Uni with no parental help. Its not unusual to have students living hand to mouth with no parental help AT ALL.
I was one of them.
They work part time , its a real struggle, and they get hardship funds help and beg and borrow and (hopefully not steal) but with enough gumption, they make it.
I worked during my full time degree, it was fine, I worked my ass off and it made me really appreciate my degree. When I graduated, I cleared my student debt in record time, because unlike many of my friends who had everything paid for by bank of mum and dad, I wasn't afraid to graft in shitty jobs while I searched for my dream job.
You say your DD can't get a job, many jobs at Uni are through the Uni, for
students- working in the Union bar, the shop, there's tutoring for school
students, lots of things her status as a Uni student will open up for her.
ENCOURAGE
THEM, as long as you are brutally realistic about what you can contribute, if
it all goes pear shaped, they just leave , but they have to try if they want to
go.