If you really want to teach her hunting and make her part of the team, she either needs the same quality you use, or you need to let her use the good ones. Otherwise she will get eye strain, and possibly not see anything before you do. One can shoot someone else's rifle, even if the fit isn't ideal, so long as it is suitable, but one can't see what one can't see with binos. Think of it as buying some back-ups for yourself, or your next upgrade, at least until you hand them over.
I have some really cheap Leupolds, they are poro, and they cost about 150 retail and were for 55 new on ebay. They are not as nice as my 1980s Nikons, but they are as nice fine for spotting stuff that isn't hiding like channel parkers or watching deer in the garden.