@fUNNYfACE36 I feel for you. My DD is a NatSci graduate. She wobbled just before A level results but confirmation of her place cured that.
The workload is intense but students are supported. In her 1st year DD said her supervisors were really helpful and supportive. Now she is a supervisor for 1st years and I hope is modelling that behaviour herself. When we went to look round the college that made DD's offer (which was not the one she applied to/she was interviewed at), we met a chap who was in the year above her at her school. He said the workload was intense but you could take on 2 extra things. DD has varied her 2 activities, normally one musical and one sporting, over the years, but that is a really important part of being there.
As your DD has done so well to get an interview, why not go ahead with it as she literally has nothing to lose? If they offer her a place, she needs to take time to think, but doesn't need to accept it until May (or whenever it is now). If she doesn't get an offer, the decision is made for her, BUT she can always be proud of getting that far.