That sounds fun...I've only done a couple so have limited experience, but I did "Marceline to Magic Kingdom" with my sisters and we loved it! It was a little over three hours, so I though it was a good length for a first tour. It also had a nice blend of both Walt and ride history, which your daughter might enjoy. I think my teens would. It was fun learning little details and history about things I've walked by so many times.
https://disneyworld.disney.go.com/events-tours/magic-kingdom/marceline-to-magic-kingdom/
I did "Caring for Giants" in AK with my family and we all loved it. Obviously very different from the MK tour. Not as much walking...low key but so interesting and you really get a chance to watch and learn about the elephants. I think there is one for rhinos now too but I haven't done that one. Also a fairly short length but can't remember exactly.
I'm pretty sure both are eligible for some discounts, maybe Disney Visa and AP, but it's been a while so that could have changed...