Do you have her stats for Willpower, Corruption, Happiness, Affection and Fear before you released her?
Also, did you check the village at Rambler's Cliff?
did all her rebellion quests sucessfully, all her comrades survived etc, iirc her affection and happiness were abysmal and i dunno why, treated her nicely, walks, dates etc and her willpower was around 80 above or below i cant remember. the reason i freed her was because i got tired of trying to make her happy when her affection and happiness just kept falling but once i released her, i couldnt talk to her once the rebel forces were strong enough, no mail, no icons, nothing just poof
i was also doing a gangas khan playthtough, i didnt really have slaves outside of story ones, the rest of the house was my kids and some mercs