Long story short, she is 5 and has ataxia (disjointed co-ordination) due to a brain tumour. She is now tumour-free and has absolutely smashed all of her recovery expectations (she was paralysed initially and told she wouldn't walk again. But a year on, she is now walking, running, scooting, climbing and generally being an absolute rockstar). She wants to re-learn to ride a bike, but she has issues controlling her right leg, can be a little off-balance, and has use of only one hand (give or take). She also suffers from chronic fatigue.
I am assuming a trike of some sort would work best - is it possible to get an e-trike? I'm thinking this would help her to go further before she tires too much. Are there contraptions to keep her leg on the pedal? She will be able to use this leg for propulsion if she doesn't have to place it (she has full strength but limited control - this is why she can walk etc).
Any advice for specialist bikes/bike shops/experts etc would be greatly appreciated, thank you!