Accidentally Shared a Room - FIGURED OUT. SORRY.

I was trying to load a room that I downloaded from the gallery into my library but shared it instead. I can't figure out how to remove it and I sure don't want the creator thinking I'm swiping her (his) stuff! Can someone please tell me what the steps are I can take to remove it? Feel so awful that I did that. Am not too computer proficient but do okay usually. Am 70. Thanks all!