[ml1201]

A familiar has no control over their master, so that won't be possible, but his anger does give her power, enough that she could have the chance to attack him and consume him. He powers that he uses he's actually channeling from Lilith, which is why when he was trying to pass them on to Faye she would have disappeared because he was going to make himself Faye's familiar and thus being a familiar Faye could summon like he did Lilith and channel that power through him.