[SixOfSpades]

I went through all the "Imoens" in Shadowkeeper, and ruled out all those that had the wrong picture, incorrect stats, only 1 Thief level, weird items like a Ring of Invisibility, etc., and this is what's left, a list of all the Imoens that might at one time be likely to be actually recruitable, with the most probable in bold.

FILENAME.cre, Thief level / Mage level, (anything in Inventory).

CUIOMEN2.cre: 7/11
CUIOMEN3.cre: 7/11
DPIMO01.cre: 7/8
IMOEN10.cre: 7/8 (Imoen's Belt)
IMOEN15.cre: 7/13 (ToB equipment)
IMOEN211.cre: 7/11
IMOEN213.cre: 7/13
IMOEN6.cre: 6/10 (Imoen's Belt, & the equipment she had at the start of BG1, minus the Studded Leather Armor and the Wand of MM)
PPDRIM0.cre: 7/8 (Imoen's Belt)
PPIMOEN.cre: 7/8 (Imoen's Belt)
finimoen.cre: 7/24 (boosted STR & DEX, ToB equipment)

teardropmina, I'm not saying you didn't pick up a Level 12 Imoen, but I will say that you might have picked up a Level 11 or 13 and simply made a mistake.