I took a look at your pictures and my monitor must be way off because the samples look different from picture to picture! Is the bath tile white, or more creamy? Is it textured? In one pic it looks solid white... The cesarstone is lovely, btw. I think the mosaic will give your daughter the bling she wants--they are both beautiful.
You might get more responses if you cross post in the home decorating forum. Also, do you know about houzz? You can see pics of thousands of bathrooms that might help you narrow down your selections...I wish I could be more helpful!

I second elle's suggestions.

Like your daughter, I love a little bling and I think a good way to bring it into a bathroom is via cabinet hardware and light fixtures, both relatively inexpensive and easily changed if you tire of it. Why not let your daughter choose a fun light fixture?

Thanks for the comments and suggestions. I clearly need to improve my photography skills. The bath tile is white with grayish taupey (is that even a word) striping. It is a polished finish.