Today's session went really well.
My trainer started off by asking how I felt and if I was sore. I told her I was a little sore, but it was better than a few days ago and I was feeling pretty good. She followed up with a question about whether my arms were sore. Telling her that just my legs and core were sore may not have been the best idea...she definitely focused in on my arms today, with a few leg and core exercises thrown in.
My arms now feel like jell-o, but overall I feel good, we'll see if that's still the case tomorrow :)