Very cool, I'd recommend you randomize the voices/pitch/etc. on each word to give a broader challenge and add some variety. You could even add the "Can I hear it in a sentence?" or "Could I get the definition?" which are part of a normal spelling bee.

Related but about 10 years ago my little brother was struggling pretty hard with learning the multiplication tables, so I built a edutainment math game based off the magic carpet escape sequence in the old Aladdin game for the Sega Genesis. He played that game obsessively on my iPad and it really helped him. Never underestimate the power of personalized education!

https://specularrealms.com/alad

Very cool! I'm sure it will help her!

To the person from San Francisco who visited my site at "/hey-look-at-me-im-a-douchebag-is-what-this": I hope you have a nice day, and you chill out.