I think that would be out of the question For the Demon, In a Sense, Merrin is untouchable, The Demon can’t Enter, Merrins Faith is to Strong, it acts as a Force field, Thats Why it uses other tactics, It dosen’t have to put on a Show For Merrin, They already Know what eachother can Do, thats Why the Demon hates and fears Merrin.
But Damian is far differn’t, He barely has a grip on his Faith, Hes both emotionaly and Spiritualy vulnerable, For the Demon there is a Chance of taking Damian down, However we Know how it turns out.
I don’t think Regan needs explination here.