Adrian knows that summoning this Fetch already takes some of his own energy by 5% a few minutes. If he lets it stay then it would definitely collect his life force as payment when his energy is gone. It is even more dangerous to keep it around as the aura of death around him became thicker and thicker per minute that thing is summoned.
"That is all. You may now return." Adrian commanded but the Fetch did not look like it wanted to leave.
"I said that you can now leave. Your services are no longer needed." Adrian added as his voice became stern.
"As the mediator wills." The Fetch replied as its footsteps could be heard once more.
The Fetch might not have a clear visible face but Adrian could see the outline. He could see that the outline of the Fetch walked through the door that was summoned with it. The sound of the door opening could be heard again. The Fetch then vanished as it entered the door while the slow creakin sound of it closing ended the ritual.
