Surprisingly, this is only my second time reading Stellarlune, and it kind of felt like I was reading this again for the first time (I remembered about 2 details from it). That being said, I still won't officially be rating it, although I will say that it probably stands with Flashback in terms of my least favorite Keeper books. I still enjoy them, but apparently, I don't enjoy when Sophie spends half a book complaining about her boy problems. And don't hate me for this, but I think it has the most underwhelming "ending" of the series (I'm not referencing the cliffhanger; I'm talking about the events leading up to it).
I'll be making my bingo boards for Keeper 9.5 and 10 soon with my predictions.

But here are my notes on Stellarlune, and just a warning, there may be spoilers for this book and others in the series:
-(22) Love that Sophie didn't bother to ask why Dex was crying and moved on to her worry about Keefe
- (54) Gisela IS a Conjurer, and the wiki lied to me because I could've sworn she was, but it said no
- (55) Gisela recruited Umber and Glimmer more recently because she says she needs to recruit a Flasher and a Shade at a point when Keefe is alive and causing mischief ... so I'd assume that Umber and Glimmer have only been around for like 8 years max
- Realistically speaking, anyone who doesn't have a photographic memory probably doesn't have exact line-for-line scenes memorized, so what Cassius just revealed could technically be entirely fabricated/off (especially because memories change each time you think about them)
- Could Conjurers conjure something - a knife, per se - inside a person's body? Asking for science
- (134) Rayni must've only joined the Neverseen 1-2 years ago, which makes me wonder why Gisela waited so long to find a Flasher
- (154) Umber has a tragic backstory?
- Shouldn't the memories recovered from the cashes be in first person?
- (384) I can't believe it took the Neverseen 9.5 books to build a bomb
- (386) Brumevale used to belong to an ancient couple that died before having kids, but Forkle claims to know nothing else about it
- (406) What is Sophie's elementalism mentor's problem with Gusters?
- (436) Is Jensi ever going to manifest, and if so...is it going to be something big and useful? Not another pyrokinetic, but we know he's good at channeling if that's relevant
- (491) Emery had a Cognate once
- (527) Deep Voice #6?: Trix