Looks like i wont need to subpoena records. I was luckily able to request records via the CSE records department by email.
They were willing to send me the actual termination letter and a screenshot of their internal system that plainly states that "child no longer living with CP".
Now if only I could get her to admit to it herself
I'll add this to my list of items as proof along with:
School Registration Records
Medical Billing Records, some done by me and by mom
Tax returns (some amended)
Past Rental Agreements