Oh, good gravy!
Thank you for stumping me. I had to Google it, but I found out. (Wow, I really didn't know!)
Pearl's Cottage is in Frontierland, in the back near the petting zoo, which is just a short walk to the backside of Fantasyland.
It is that little cottage where the kids can color for free if supplies are out. Sometimes it's just Home on the Range pictures, other times it's been simple farm animal masks.
Pearl must be a character from Home on the Range (one of the few I've not seen yet). They themed the new-ish petting zoo to Home on the Range when it first opened.