can you fuck a horse? that was one of the more… questionable scenes in the book.

Uhhh which book is that? If it's the section I'm thinking of with Kelpie the horse, she's entranced by its beauty and it's rider/owner tries to use that to get into her pants (and ultimately died before he was successful) but I don't believe she ever expressed sexual attraction at all to it by my memory from reading the books a couple of months ago.

the party basically needs the woman to proceed. she does not want the child. i believe it was the product of rape. yet for some reason geralt and a literal fucking vampire convince her that abortion is wrong and she should keep it instead of drinking a potion about it

The party is trying to find Ciri after her disappearance. Geralt and Cahir are having visions indicating that she's presently in great danger and suffering (and at that she was!). Finding out while practically at the front lines of the great war that their incredible archer, Milva is pregnant completely derails their entire journey because she can't ride, shouldn't travel, and will need to rest in a safe area for a while (which they are at this point constantly far from anywhere safe), plus they can't exactly bring a baby onto the battlefield they're actively crossing. It's one moral quandry wrapped in another. Ultimately Geralt and Cahir leave it to Milva's decision, as does Regis the barber-surgeon/vampire who created the abortion potion.

Also it wasn't rape. While guiding a group of elves to safety, they hid in a thicket for a night with Nilfgaurdians surrounding them and searching for them. The elves decided that since they were likely to die a horrible death at any moment that they should take the time they have to find what enjoyment they can, and Milva decided to join in. It just so happened they did not die that night and now Milva is carring a halfling for whom she does not know the fathers name (for safety no names were shared with the elves she guided)

i think they generally said that ciri lost her elder blood powers after the king of the hunt was killed right? otherwise I’m gonna be really curious how handle that as well. she should be sort of the world’s greatest sorceress otherwise.

She gave up her magic after trying to use fire as a source of power out of desperation while navigating out of the "Frying Pan" desert. She wanted to save Little Horse the unicorn after an unfortunate battle with a monster she hadn't yet learned of, but no other sources were available. My understanding is fire as a magical source is all consuming so it is forbidden to pull from for safety reasons, but that was largely left up to interpretation.

Upon pulling from fire, she saw the imense power that presented her, the ability to rule the entire world, but also how that would hurt those she cared so deeply about, so she instead gave up her sourceress' powers.

If you want anything to complain about in the books it should be Milva's winging about being an illiterate farm girl that honestly was out of character and just seemed written in so she wouldn't outshine the others

Edit: Cahir's attraction to Ciri is also creepy as hell the way it's written, but that might be intentional, since that's at a point where she's coming to realize that everyone wants something from her, everyone will tell her why she should want to give them what they want from her but nobody ever seems to care or ask what she actually wants.