Going short on near hind

Just as I enter our first Walk and Trot dressage test I find her going short on her near hind. She came with this but it had lessened off with work, Physio and stretches but she's definitely short. So a lot of massages and stretches to see if she pulls the leg through again in the next couple of days.
Starting to think tentatively about the summer hols. Sadly not the 'big trip' this year but very possibly a tour of Ireland! Always wanted to go and never been.