There's some interesting overlap here with Yvette. She had a slightly similar beginning. Awakened at 10, and had a very nasty Nightmare encounter at 16. Only it wasn't her that lost her memories, but her Mentor. Said Mentor would also have been around when Miyako was an active Dreamer, starting out around 20 years ago or so.

It would definitely be interesting for Miyako to try to act as a small m mentor or maternal figure to her. She... actually would not have had a strong maternal figure since she moved away from home at 11. Given they both have trauma from Memory Issues, and Yvette is very clearly Hurting And Not Dealing With it, it could be a thing!

Just ignore that part where she's also trying to actively antagonize the organization the woman that's basically your daughter is the face of.