Update to above: I actually figured out how to fully unlock the gallery on my own, and I managed to get edit the files to the point where 3 of the missing scenes are available to view in the gallery.
Within the game files, I also found the next 3 scenes in sprite form (as well as frames of animation that lead me to believe they could theoretically be viewed at the moment) but the only scenes I could get to actually play in the gallery are the ones that exist within the game files under data/mon/mon(number). These files existed in the last version up to mon10 (hence why I've been able to put 2 new monsters in the extra gallery, as the most recent was mon08) so I simply moved them over to the new version along with placing their respective selves into the gallery. I was unable to get the monsters themselves to spawn, but, hey, at least y'all can look at the scenes.
I believe if these other scenes could somehow be pulled out of the files and placed in the same format (perhaps through a different decompiler - if anyone has a good one let me know) they could also in theory be viewed in the same way.
Anyways, here is a link to an edited version of v0.0.2 (the latest version, posted today) that also includes the 2 new scenes in the second page of the extra gallery (along with 2 other monsters who I could place in the gallery but could not get their scenes to load) along with a W.I.P game over in the gallery itself, also on page 2. It seems complete besides not having a background while loading.
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Within the folder is also a save file that must be placed in C:/Users/(your name)/Local/FairyPrincess_V001 in order to view the new scenes.
If someone can find a way to further decompile the game let me know. What I've been doing is absolutely primitive and I've reached the limit here.