Agreed... he's not in a position to say no, and it would free her up to fuck his ass with a real cock pushing in and out of his throat like her dildo does here. If she allowed the real cock to ejaculate in his throat, that would be a total own.
You would think she's considered bringing in a bull to thrust a hard throbbing cock down his throat too...I mean, how could she not? She's such an animal.