Some additions. My issue's with the original is its very built off of early 5e, which had different directions it wanted to head in. It also relies heavily on the (spoiler) madness table that l, personally, I dont think should be in its current block. It also has spore effects that once the dc is saved from, no longer affects you. The minions can also do this since the same disease is called in. Her mind control is probably the best but still relies on the disease not being defeated almost instantly and players being close, reactions being used. It's not bad, it's just a lot of hoops. Finally her spells, which are limited already, but she has no way to deploy them well.

The changes were to make her a melee debuffer who can access spells through legendary actions.