Has anyone ever lost a part? And if so were you able to get it/her/him back?

My part that I name Happy Homemaker--what she calls herself I don't know since she is not available--went away over ten years ago. She used to organize everything in the household, made schedules, menus, enjoyed cooking,did the shopping, made a budget and paid bills and stuff like that. She loved that kind of stuff. She also sewed and enjoyed it. She did the taxes and had a lot of confidence. I miss her. She used to take care of us.

It's almost like she died. Can parts/alters die? I want her back.