Morella trying to bite Pet
Morella is Ellen's new Nephentes Siniestros who was sprouted from one of Berenice's seeds. Therefore Morella is considered Berenice's "daughter", and is even more vicious than her "mother" was.
Her bite poisoned Pet in "Pet's Revenge", but also cured Ellen from the trance she was in.
Morella at Ronan and Dahlia's wedding
By "Hot Air", Morella has grown into a sizeable plant, no longer the tiny sprout to live inside of an old beaker.