While the game's story will treat 1.0 characters as ones who were at the battle and sent forward through time, many of us choose not to roleplay our characters as such. Rhostel was not there, so there is no reason she'd be sent through time.
Likewise, if someone wants to make a totally new character and claim that they were at the battle and were sent forward for RP's sake, there's nothing wrong with that.
As far as anyone has been able to tell, the only requirement for being sent forward is to have been at the Battle of Carteneau Flats, and to still be alive when Louisoix cast his final, last ditch spell to save the survivors.
Likewise, if someone wants to make a totally new character and claim that they were at the battle and were sent forward for RP's sake, there's nothing wrong with that.
As far as anyone has been able to tell, the only requirement for being sent forward is to have been at the Battle of Carteneau Flats, and to still be alive when Louisoix cast his final, last ditch spell to save the survivors.
