D.K.
I suggest Hairspray on the couch. You spray the Hairspray onto the "inked" area and blot with a absorbant cloth continue the process until the ink is gone. Follow up with a mild soap and water to avoid a ring around the spot.
I have used the Hairspray for many years to remove ink spots on fabric and it works quite well.
Best of luck and I hope you ink disappears.