I'm just about to finish my first year of university at the ripe old age of 28. I didn't want to go when I was 18-19 because I'd had enough of school by then and didn't get the grades I was predicted to get.
From my experience though, I wish I'd gone when I was younger. I've made friends with some of the younger students in my society but I feel like we're at different stages of our lives even though there's less than a decade between us. Younger me would have been more willing to party and have a laugh

I do feel like I missed out. I pictured university being like a full time job but I've found it a very comfortable level of challenge and I've got enough free time to continue working. It might be different in the next couple of years though!
Some employers are not that fussed about what your degree is in. As a PP mentioned a degree shows that you have good written skills, presentation skills etc. Not just that you know a lot about the subject. IME I should have just got it out the way with!
The debt thing: I used Martin Lewis' calculator and even if I get a decent starting salary, I'll never pay off my tuition loans, let alone my maintenance loans

it comes out like a tax, so you never really know it's gone anyway. Either way I'm hoping to earn a lot more than I am now, so it can only be a positive to me.
Your daughter sounds like she has a specific career she wants anyway. That's great! I still don't know what I want to do. I just want to be paid more (and hopefully WFH!)

and I need a degree to do that. Bottom line: if she wants to go, let her.