Sg1 x crossover
Ok Hear me out.....
Lily either
had an accidental meeting with either a tokra or goald as a child
While working as an unspeakable has an accident in the department freeing a goald or tokra
Said goald or tokra is hesitant
In 1 The goald/tokra is injured and needs time to heal lily is still a child and they both grow up together and over time merging beyond just being in the separate bodies.
In 2. Maybe the conscious is gone in the symbiotic and just hold the memories an lily takes it over
Night of the attack the spell kills the body but symbiotic remains alive dumbledore steals harry away and does his work on him [bad/manipulative dumbles] dumbing him down sealing his powers...
Unspeakables turn up capture lily/hestia.
Que harry school time can be cannon or he is slowly fighting the sealings
Que battle of the DOM and Lily is released into new body.
Older close friend of lilys from school who knew lilys secret and now lily is in her headband she is not happy
Bonus Harry is a Harcesis and the seals are removed by lily and that knowledge and power are the power he knows notary has naqueda in his veins mixing with his magic
Had this idea but I am not that great of a writer
I just forsee lily having a password vault (she set it up with the goblins incase she ever swapped bodies) and storming in there for a zat and a wrist device before going on a rampage against dumbles for doing what he did to he son