Much like my wife Ysolda on Dawngaurd dissapearing after I bit her neck and she went to sleep.

I just built a house, Adopted the little girl, she said "Ill gather my things and meet u at our house", so I went to the blacksmith in riften, picked up somemore Iron to further furnish my house, immediatly returned to my house after that using fast travle, went in the door, and she was there.

Though she said "Ill gather my things and meet u at our house", While she was standing next to the bedroom In my house, she then proceeded to walk out of the frount door and dissapear.
Slept 24 hours, she dident show back up, done a ton of furnishing, still nothing.

The bug's are starting to get to me.

Btw my house is at Windsted, and its foundation was small (First House)

Appears she corrected herself after Ysolda finally appeared.