Kouzelnice v Víska Bahnice can depend on one of the very first difficult choices Geralt faces in the course of the game.
This is the "old woman" healer. She provides for the magical and healing needs of the village of Víska Bahnice. She also buys and sells a number of things, including: rostliny, minerály and alkohol. She also pays for valuable (non-alchemical) monster parts and dispenses information valuable to the plot. She'll buy:
Much earlier in the game, in the Podhradí, Geralt meets Abigail, the local witch. Her relationship with the residents of the Podhradí is rocky, to say the least. Geralt must decide whether to help her or leave her to the villagers at the end of the kapitola. His choice determines whether or not you meet the healer described above, or run into Abigail for a second time.