Yeah, the die hard fans of the series seem to be all about the Achmed. (Me, I couldn't get over his name. Nor over Rhapsody's, for that matter.)
Ah, yes, the time jumping:
There's a prologue starting with Rhapsody barely turning fourteen and boinking her Soul Mate, who has been yanked out of time by mysterious forces.
Soul Mate comes from a future a thousand years after the destruction of Rhapsody's homeland. Seven years later, she's done her speed courses in prostitution and super mad Naming magic and beating up guys twice her size. (There seem to be a whole slew of chronological mishaps concerning these seven years, as sometimes she implies that she's been out of prostitution for a certain period of time. I get the dates from the chapter headings though.)
Rhaps travels along a temporally whacky tree root through the center of the earth with her two Bolg buddies. At some point she becomes a born-again virgin after travelling through dragonfire or something like that. Then she picks up a mythical and magical and totally-lost-in-the-mists-of-time sort of sword called the Clarion Daystar.
However, when Rhapsody ends up down in the core of the earth and travelling along some time-warping tree root, she pops out 1400 years after destruction of said homeland. Soul Mate should be about 400 years old, which shouldn't really be a problem as he is conveniently half-Lirin too, and his grandmama is an immortal dragonspawn, but still, he happens to be best friends with a 58 year old lord who can conveniently remember a childhood where the Soul Mate and Ye Olde Lord played as children. Similar chronological inconsistencies abound.
If you followed that....well, you are a better person than I am. I had to double check chapter headings repeatedly to put it all together. The author pulls this chronological whackiness all the time, maybe because it is Cool(TM).