I figured paying Genkai a visit would be more of a social call since I don't see her and Genkai wanting to deal with a teacher/student dynamic on top of their friendship. If anything, Botan would care for advice and to check in than outright have Genkai train her. Botan is confident in Kurama's abilities as is and he's probably a far better candidate for overseeing Botan than Genkai since he already works with plants and such. 

I could take us to the weekend though (the crux of my question being what next?) after summing up the conditioning that has been going on but it'll probably start off more gradual. As you said, as the training continues, it will progress and pose more challenges in terms of spirit strain and physical strain. Botan is tough but I doubt she's in [i]great[/i] physical shape. XD 

Hopefully she can still munch on cake. Botan looooves her sweets.

Also, kudos on the extra mile.