Update: Rose was backed yesterday!
I finished studying last night and noticed that I had a new email from the trainer. During yesterday's training session they sat on her for the first time. Apparently it went well, and she's also being turned out with the other mares now, and having a great time with them. She's such a sweet social butterfly. She makes me proud. Anyway, I simply cannot wait to see her work on Saturday. Here I thought I'd just be watching her longe in side-reins, but now it seems like we'll get to see a bit more!