Like Thomas Covenant, the central figure of Donaldson's other fantasy series, Terisa Morgan is plucked from a less than happy existence in a world that is recognisably our own and finds herself a central figure in a struggle between forces that she only partly understands, some of which reside within her own person, while grappling with doubts about her own agency and self which are essentially existential.
This (Mordant's Need) series doesn't have the same depth and complexity of the Covenant books, or the symbolic, archetypal power of those others, but it stands up well to repeated re-reads (last time), and while it's a relatively minor work, Donaldson is one of the greats of the field and The Mirror of Her Dreams and A Man Rides Through unmistakeably have his stamp on them.