I'm curious too as we are on the same route. I have been eating yogurt, cheese, and some other dairy and he has been fine (he is still BFding). I've also been relaxed about what I've been giving him, so he eats hidden dairy and the other day had some pasta that had cheese in the sauce. So I'm wondering if he's outgrown his intolerance too. Haven't been brave enough to give him cheese or yogurt yet, although I suspect he will be fine.
So I do think it's possible, but maybe proceed with caution and keep an eye out. Intolerances can strike at any time, so she may be fine after drinking milk 10 times but then for some reason it comes back on the 11th!