ah, IJM, now you're fleshing it out with additional stuff. which you didn't mention originally.
if you're looking for suggestions (not sure if you are?), mine would be to sit back for a bit, try to discern your expectations from your resentment, and then have an honest but non-accusatory talk with this person so you both can get and give clarity on where you're at.
she may well not be the right sponsor.
your expectations about sponsorship may be unrealistic.
all kinds of possibilities about what's going on.
and just to mention again the suggestion to read the pamphlet on sponsorship.