Rou never wanders too far from us, and we are still working on recall, which has its ups and downs.
My advice, at her age, I would leash walk her or just be outside with her when she is outdoors in the yard. Sounds like separation anxiety to me, that or she needs a long game of tug or fetch. At her age, Rou was being taken on hikes 2x a week, and continues to have puzzle toys given to him to utilize that smart dobie brain.
Also, back to genetics, she could use some focusing and puzzle toys. Maybe, possibly, mental instability and needs to focus and be given a task?
Rou will "bug out" if I leave the area, which consists of crying, moaning, chewing bars of whatever. He hates being away from me- unless he is playing with his friends, then he could care less but always seems to stick close.
Can we have some pictures of your girl, Jynx was it?