I'm afraid parents like you really do my head in OP. You can't be bothered to get your head around the student loans system, but you're happy to mess up your daughter's future.
It's her life, not yours. Let her make her own decisions. If you like, say you won't help her at uni.
"I can't afford the repayments if she struggles"- well, if she is struggling, she likely won't have to repay as she will have dipped below the repayment threshold.
Most people never pay their student loans off in full, so talking about paying off the capital is pointless.
Apprenticeships are only good for those who want to do them. Most people are much better off with a degree, not just financially but in terms of having had the experience of going to uni and getting to study the subject they love.
In many places, she will do a few years cheap labour via an apprenticeship, and then be left without a job at the end of it. She may find another job, or may end up deciding she needs a degree to progress her career after all. Although earnings in their early 20s can be higher, you also need to think about the long game- how far can she progress in X career without a degree?
Stop trying to stress her out and put her off uni and let her live her own life.