I toilet train immediately after their 2nd birthday whether or not child is speaking. But child need to be able communicate even if non-verbal - and they need be able pull own pant up and down. They also wear diaper for napping for quite while after being trained when awake. And I do send every 20 mins to start with. I train in real underwear, no diapers when awake but only nap time. I trained some younger than 2 but only few months younger.

I not think any of her request unusual as it does work here with 5 other child but if you want do it differently, that up you.

Have you consider have toilet train guide which detail your expectation for sign readiness and you process?