I'm in the midst of dealing with my L8 suddenly "retiring" so take this with a grain of salt. KEEP IT FUN FOR AS LONG AS POSSIBLE. You have no way of knowing at silver or L3 what your girl will want 5 years down the road. No matter how dedicated, or how much she adores it, or how big her dreams are....just keep her loving the sport and she'll progress how she progresses. If I had a crystal ball, I would have kept my daughter in xcel and never moved to optionals. I don't think she'd be quitting if she had stayed on the less-pressure track.
Speaking here as somebody whose parents were the opposite. Always "no pressure" on my hobbies, "don't expect to medal", "don't think we're gonna drive you to auditions far away" etc.
I wish I'd had a little more push and guidance from my parents. I've seen what others can achieve with that kind of support, and I am jealous of it. Every inch of motivation having to come from the kid themselves can be exhausting, really. And sometimes, if you wait too long, opportunities will also decrease.
And yes, you may not reach the highest levels in something, but to some degree it's better to have had the chance and see that it didn't work out, than to never have had the chance at all.
I do agree though, it should remain fun. I think it's a balance: I would say if it's practically feasible, give her the opportunities if she's eager, but always keep evaluating. If it turns from a blessing to a chore, it's time for a change. Of course, there can always be bad trainings, bad days, hard periods, but the overall picture gymnastics should bring joy.
That kind of turned into a slightly chaotic ramble, my apologies. But I thought I'd add my perspective.