Good advice from BB.
I have just posted a response to a similar enquiry...
Most Long Stay products on the market should be suitable for her. Whichever insurance provider is selected you should check with them that the work she is intending to do will be covered by the policy but as long as it is just bar work/waitressing then it shouldn't be a problem.
It is difficult to recommend anyone specifically, instead you should have a look at the prices and cover available and make a decision based on the combination that is right for your daughter.
Hope this helps.