Let’s get the most important thing out of the way first: Stevonnie is the best Yoshi, period. Also, the outfit that results when Connie is wearing her training garb is just great. (We may not be worried about that diamond that ends up on the outfit, but that can’t be accidental.)
So it was a very emotional episode with a very healthy message. Steven’s kind of been going through a lot of stuff lately, with plenty for him to be anxious about. The appearance of his mother’s face in his list of anxieties? Not surprising, given how central she is to everything that’s going on with him. It’s still sad though.