Dmitri knew that if the plan had any chance of succeeding, he had to get Clover used to bring ridden, as well as make sure Jenny didn't become uncomfortable due to lack of riding time. He apologized profusely, but nevertheless saddled and rode both mares the next day. Jenny was a delight to ride; it was like she was a born horse, trained for years. Clover, on the other hand, was difficult, validating Dmitri's concern. She even bucked Dmitri off at one point, but apologized after, not sure why she had done so.
The next day, Dmitri went to the stable with a new strategy, now that he knew Clover would be rough to train. He rode Jenny first, then approached Clover, explaining that he would start with just getting her used to wearing a saddle. Clover agreed. When Dmitri put the saddle on, however, his heart jumped into his mouth. The girth was significantly larger than it had been the day before.
Dmitri silently scanned Clover's pregnancy. It revealed what he had been fearing. The curse was still active, speeding Clover's pregnancy. There was no way they could go along with Clover's plan. By the time everything was set up, she would be too far along to be ridden and would be very slow.
Clover didn't take the news well. Dmitri let her into a private paddock to run off her frustration. When she returned, she had a new plan in mind.