Personally i'll give it to Nephenee when she needs it, even though she starts out at level 10 i believe it was, use her for most of chapter 11, set her aside for 12, then use her for the rest of the game, best lance user besides oscar IMO, Oscar needs none, he's that good even on normal, but mostly saving the BEXP for Rolf, Mist and Soren when i need a quick level, even though soren becomes beastly after he class changes.