Sorry to disobey your wishes, but I’d suggest reading this review of the Musician Draco that’s an R2R DAC. The reviewer is well versed in the various single-bit chip DACs and so is in a good position to provide a helpful perspective. Plus, if your daughter gets the bug there’s an easy upgrade path by adding a DDC and utilizing its i2S input — I did this with my Musician Pegasus, and the improvement over SPDIF was not small (maybe a great future birthday/holiday gift?).
https://soundnews.net/sources/dacs/musician-audio-draco-r-2r-ladder-dac-review/
I started streaming through my iPad/iPhone using a Dragonfly Red with good results (and obviously far superior to running direct from the device), but I upgraded from the pedestrian Apple Camera Adapter to this from LavriCable and it elevated performance significantly and doesn’t cost all that much more…
Anyway, just some thoughts FWIW, and best of luck in getting your daughter to catch “the disease.”