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I'm looking to identify a story about a young woman who needs to go to a Big Baddie's castle to retrieve something, a book, I think.
Along the way she meets a young man who at first she doesn't get along with, but who ends up being a love interest.
She also discovers how to use magic, which she uses by traveling down a "web" in her mind. At the end of the book, her fight with the Big Baddie leaves her "web" burned out.
Some more details, I believe the book has a scene where the Main Character takes care of her leather boots and bag by oiling them.
I think when she and the young man arrive at the Big Baddie's place, the Baddie is manipulative and actually has them stay there for a bit (maybe under the pretense of teaching the young woman magic?). The young man is more suspicious of the Baddie than the young woman.
It's a pretty grounded story. There's not much more to it than the woman going on her quest to the tower, arriving, beating the Baddie and getting the object she was questing for. It did end in a way that made me think there'd be sequels.
I read this in the early 00's but I'm guessing it was published in the 90's.
I know that's not a ton of info to go off of, and I may have mixed some details from another story, but I appreciate your help. It's a book I think my wife would really enjoy.