I don't know your case. but I have been told by a handful of houndsmen that ivermec will alter the heat cycle. if your using ivermec mite want to stop for a while. try whats said above or in with a male mite help to...
Run her a couple times , worm her clean her out good and pack the weight on her pour the feed to her she'll come on in 👍 it helps to throw in a pen or kennel with a male dog or 2 they'll usually check on her and bring her in also
You know they have a new Viagra for women you might try Dr.see can you get.also a few yrs ago on the farm we used a drug for animals Spanish fly.as a young man back then I had a lot of ideas about this stuff. I wont go into details. BOY WHAT A NIGHT.