chrissa - your daughter needs to go to her student support centre and see if there is a fund for students on low incomes. in certain circumstances, there is money available to help top-up student's income if bursaries and grants etc. are not enough to cover the basics.
also, it's not worth her getting a job in a bar - her shift work and placements will make regular hours impossible and it is a profession which will not add anything in the slightest to her employment portfolio/cv. she should either apply to nhsp (the nhs agency nursing company), her local health trust as a bank worker or another agency where she can get work as a healthcare assistant in her relevant field of nursing and local hospitals - this will provide a good income (nhsp weekend shifts earn you around £120 for a 14 hour day) and relevant experience for her too.
when i was a student nurse, i had to work at least 4 bank shifts (28 hours) a week (as well as study or placement) in order to keep my family, pay all my bills and survive as a student. i worked ruddy hard and got a 1st in my degree - if she wants it that badly, she can do it!
also, you don't have to help her financially (i know that it would be nice and you would feel better), but you have your own issues to sort out and are trying to maintain your home for when she is not at uni and living with you (so in a sense you are helping her!). in return, she should be working hard to support herself at uni and thinking about the best ways to be doing this. it is possible - but very, very hard work. best wishes, chrissa x