Okay so I honestly don't remember a lot of the details because I read this book about 23 years ago. I have no idea whether it was a new series at the time or not. I do distinctly remember it was a fantasy series and was sad I couldn't finish when my family moved. I do remember there was some kind of war going on, I believe there was a female leader on one side, and I very distinctly remember there was something akin to a river of souls. (I have no idea how it was described or called in the books but that's definitely what I took away from it).
I apologize that I didn't remember more details, and I honestly don't expect anyone to know it from the very little information I provided, but I am hoping anyway.