On another note--I have calculated experience!
Assuming I haven't already given you experience for the first 15 reptus, the total "breech" fight was worth 9600 XP/character.
Additionally, Vyrinjor, the White Dragon, was worth either 4360 or 3650 XP per person, depending on whether L'Aurel gets XP for the fight, or not. I'm inclined to give it to her, so assume the lesser amount unless I tell you otherwise.
If you all do choose to rest for a few hours, I'll let you use the XP you've recieved thus far to level. However, there are limits.
Xath and Arfin can't respend the XP they already spent to level from 11 to 12. So, they still might be a little bit behind.
However, XP awards can only grant you one level at a time. As such, if you should happen to have enough XP to easily surpass level 13 and *technically* be able to reach level 14, you must place yourself 1 XP shy of that level. In short, one XP expenditure can't give you 2 levels at once.
Happy leveling!