ill try to keep this spoiler minimal as I can. There are a few sequence breaks once you get into the caves right before you meet the two dark elf's, you can go back up to a higher level and skip a fight by going through the open ceil which used to be closed but once you go to rest at the mc's home everything will fix its self.
If you get the cursed book before speaking to the two elf's and then do there sequence and leave the cave it will skip and you will be able to bring S'rami into towns with you, if you go down to meet her cousin she will also be in the sequence with one of the two elf's you meet earlier and after you complete that she will join you into the clothes shop but you will be soft locked because you cant give here the clothes because she never leaves your party
also if you use the harpy wing after getting the book the game wont play the dialogue to set the other events in motion so you will need to enter and exit the cave to fix it