There was a WOJ that "we would see her again." with him smiling. It was in a video in reply to us seeing Mother Murphy.
I've had a theory that she will end up tied in with the Mothers at some point. Though I also have the theory that Mrs. Spunklecrief is the abdicated Mother Summer. The WOJ's on Mrs. S is that she finally retired, sold the apartments for a good deal, and basically got her ideal retirement in Florida. It was something to that effect. That sounds pretty summery to me. That of course doesn't mean she was a Mother Summer, but it got me thinking about things. I like to view her as keeping kind eye on the next Starborn she foresaw prior to her abdication.