Nick Gordon injected Bobbi Kristina with lethal drug cocktail?

Shocking new details from the civil lawsuit filed against Nick Gordon in the death of Bobbi Kristina Brown claims Nick injected Bobbi with a lethal drug cocktail;

From 11 Alive

Bobbi Kristina Brown died after Nick Gordon injected her with a toxic mixture and then placed her unconscious in a bathtub, new documents in a civil lawsuit allege.
The new allegations are made in response to Nick Gordon’s motion to stay discovery proceedings in the civil lawsuit filed by Brown’s conservator. Discovery is the legal procedures used to gather evidence for a lawsuit.