I've used this card (mostly with Agnes) but I'm not sure about it.
At its best, this card is 2 resources + 4 actions (counting the one to play the card) to heal 3 horrors:
- Even with Akachi Onyele, it's still 2 resources + 5 actions (counting the one to play the card) to heal 4 horrors
- With Marie Lambeau who provides Action advantage for Spells, it's still 2 resources at best because you don't always have the ability to trigger the extra Spell action.
What's more, until now, investigators have other ways to repeatably heal themselves without reducing their action count: