I imagine that she would have a chance at any university with the biology, but that she would have a higher chance at some of them if she chose something more relevant.
Honestly OP, after so many posts, do you still think this? I challenge you to show us entry requirements from any university in the UK, even a top one rather than a mere middle-ranker, which asks for English literature or history for an MFL degree.
Actually, biology A level is keeping her options as open as anyone does at A level, bc she could still do a biology degree.
There are also all kinds of other degrees she could do with no specific subjects required. Psychology, politics, philosophy, accounting I think, and so many more.
If she is genuinely keen on Oxford or Cambridge, I agree with PPs, check out asap what you and she need to do, as applying to those two is very different from other unis.
She will need to be really keen (which she may well be of course) and really good at and motivated by her subjects (which ditto!). Good
luck to her, genuinely 😀