@ArlyA One advantage the electric mowers have for inexperienced operators is the safety systems. They are effective and almost invisible.
For example, on our gas powered riding mower I get the call all the time, "I got off to move a toy and when I got back on, it wouldn't start." So I have to remind them to shut off the blades, push the brake, or whatever they failed to do.
With the electric, the seat senses you got off and shuts everything down including the blades. When you get back on, the seat senses you are there and allows you to pick right back up.
I believe you will find the electric zero turn to be a nice addition for you.
And I'm sure you've already done it, but please compliment the parents of that kid. They are obviously doing a good job.