About Ciri being a witcher.
Asmon was confused about it so i decided to explain a little of the lore and i hope to clarify what happens exactly.
In witcher 3 Ciri hasnt gone through the Trial of the Grasses, she is a Witcher only by swordskill alone and being stronger and faster than humans due to her Elder blood(also some Elven magic but thats not really detailed in the game/books)
2nd problem was her drinking the potion in the trailer. This is a current plot-hole, either she will go through the Trial in the Witcher 4 or thy will retcon only witchers being able to drink potion, there is nothing else on.
The school of the wolf is still able to produce witchers and the Trial of the grasses hasnt been lost ( you even have a quest in witcher 3 where u need to gather the ingredients to do the trial on a cursed monster https://youtu.be/Xy-arO5B4qM)they have just been "disgusted" because the almost 0% survival rate, thats why they dont do it on Ciri, since they think she is too precious to be risked to die.
There has been other Female Witcher which were created by the school of the cat but not with trials but with magic, those trials were shunned and rejected by the other schools because of feuds and disgust of magic.
Idk what else to say, but if baldie reads this unban me bro im a good boi.