Shitty TL here.

As promised, here's the Kaname Doujin I translated a while back and uploaded on /d/.
I've said before and I'll say it again, I am in no way proficient in Japanese but I did my best to do what I can to make it as accurate as possible.

Enjoy

First of all, I can't read a word of Japanese, so I can't say how accurate this is to the original script. That being said, I think you did a pretty good job.

As long as the text appears to match the images, and has legible grammar, most people won't mind too much about how accurate the translation is.

Base +13, Vile Mk 2 -10, rescates123 +3, umakeisee -6, Zakuzelo -13, acidtestguy -2, As4shi +6, Seelenmord -11, LAMGAV -4, Ass Spanker -23, somedude1234symbols -7, Psychotic Juri +6, joseph_864 -6

>self inserting as the newly transformed monster girl

nice

Base +11, rescates123 +3, DarkCocoon +6

So the last story just ends with the princess completely digested? That seems pretty anticlimactic, unless I misunderstood something.

Base +9, astrohydra +7, John_Thrust +6, unknownshadows +6, Csabawars +5, Seelenmord -11, The_Agent +6, gandexf4 +9, Shade080 +8, SMG5317 +6, Miko Neko +7, annoying_you +8, Crese +6, and 3 more...

I quite enjoyed this. The first story was pretty wholesome, though it was a bit rude of the girl to transform her partner. I'll be checking out more of Kaname's stuff I think!

Base +4

I don't know if it is the translation, but the last story doesn't make a whole lot of sense, so I made my own head-cannon for it. That choker the princess wears is a magical item that constantly heals her. The lamia needs to digest her to absorb her magic, so in order to break the princesses spirit the lamia spits her out just to tell her that all her subjects and family have been killed. Having lost the will to endure the pain of perpetual digestion, the princess removes to choker while inside the stomach so that she can finally die. Too dark perhaps?

Base +6, joseph_864 -6

Probably the translation, considering OP himself called it shitty. The last page implies that the princess is dead visually, but the dialogue makes it sound as if that wasn't the case and there was no scenario where she's supposed to die listed before either, regardless of whether she endures or doesn't. I'd guess the "welcome her into her clan" got butchered, maybe something like letting her die an elf. Then again, that's listed as her victory, so I don't have the faintest idea. Probably just reading too much into a broken translation.

Base +9, under18thenitsloli +6, eastxx +6, SubtleAnon +7

Took a look at the raws. Most likely just a mistranslation. The condition was if the elf princess 'wins', then she gets absorbed and becomes part of the "flesh and blood" of the demon queen while still retaining her dignity as the elf princess. The term for "flesh and blood" could theoretically be used to refer to blood relatives so I guess that's where the confusion came from.

Base +7, Rin Tohsaka +6, eastxx +6, DarkCocoon +6