There are plenty of attractive, light-weight, slipper-like shoes available, if that's what she wants, and if all else fails, there are these
and these
though both may be below her... er weight grade.
I’ve worn some toe shoes (the pink ones) in my time, which have heavily plaster-reinforced toes. I have always been curious about the “ghilies” of your second photo, used in Celtic dancing. How do they work?