A Closed and Common Orbit

I had the worst time getting through this. Part of it was, I no longer remember the events of the Wayfarer from first book. I was getting frustrated with the whole-should I know this character?? This is where series really should have a “previously on” beginning section. I know this is a companion novel and not a sequel, but still, I think the reader was expected to remember Pepper and Sidra from before-and I just didn't.
Second, I really didn't like Sidra's story. Could not have cared less, I hung in entirely for Jane. I almost wish this had been Jane's story. I found myself speed reading through Sidra's chapters to get back to Jane.
I'm not sure if I want to read the 3rd one. I feel pressured to reread A Long Trip....before I even attempt it and I don't know if I have the patience for that right now.
This is probably a case of me having to admit that I can no longer read series that are not completed.
I'm making this book sound awful, and it's not! The problem is all me here.