I looked into the hormone implants that go in the neck and because they have to be replaced every 90 (? I think) days, I didn't do it because it causes scarring.
Now, I'm going to toss this out and I'm fairly sure someone is going to take offense to it. I breed and own several mares and a stallion and until this year didn't own a gelding. I have NEVER allowed a mare or stallion to tell me when I would ride or wouldn't nor have I allowed a mare to be ****y with me. The one mare I had who ended up having cysts, was obviously in pain, so we depo'd her until she quit cycling. Side effect of the depo, she basically ended up chemically spayed. Not a bad thing, she was not a mare I used for breeding because of confo faults.
The minute a mare wants to squat and pee or lean against a fence, she's going to get spurred and hit with a whip or the romal end of my reins until her fur falls off if necessary. There is absolutely no reason to tolerate mare-ish behaviour just because they're cycling. It doesn't work for human women at work and it sure doesn't work here for the mares. I also won't tolerate a misbehaving stallion and mine all know it. Nobody realizes I'm not riding a gelding whether at a show, a trainer's facility, on a trail ride, whatever. With a stallion, I will occasionally use Vicks in their nostrils if they just can't seem to contain their exuberance around an in heat mare, but that's as far as I've ever had to go. Any further, or any real bad stallion behaviour and they'll either get sold off immediately or gelded and then sold.
Once I for sure ruled out a hormonal imbalance and/or pain in that mare, we'd have a CTJ and she'd come back singin' Gory Hallelujah or she'd get sold quick. No need to lie or say she's something she isn't, I'd sell her off as too marish for a riding horse to a breeder and be done with her.