I don't know how to use it, it's strapped to her waist but I'm pressing everything and still nothing changes. I'm on pc by the way.
The scroll should automatically go to your inventory on the right with the other items you got, if not click and hold to put it there and then click and hold until it is over the tip jar and let go.
I only needed to press "Continue" for her to drop the scroll, and I used it after. Thank you for replying though.