needs to open a new bank account asap for student finance purposes.
This sounds like you desperately need her to open a new account - why?? If she needs to give SF some bank details, then use the Nationwide account initially.
There are plenty of student accounts around, all with different perks, but when DS opened his, he had to provide a UCAS pin which was only available when he had a confirmed place after results.
She maybe can get this earlier if she has an unconditional offer, but otherwise wont be able to open a dedicated student account without it.
My kids had Lloyds under 19s accounts when younger, then converted to Lloyds classic account at 18, for various reasons. It is a normal bank account. DS used this for SF loan in, plus earnings from his job, and accommodation costs out.
DS also opened a HSBC student account, running that for his general living costs at uni. He also got a HSBC credit card, which - if used sensibly - will help credit rating - but he is very sensible with money, which I appreciate doesn't apply to all students.