Join Date: Oct 2009
Location: Just south of sanity
First, unless you got confirmation that the check arrived, don't presume that she has it. How did you send it? FedEx, UPS, USPS Overnight, or just via regular mail? If you sent it by one of the overnight carriers, you should have a tracking number.
Second, until she receives the money, the item isn't sold. If she hasn't yet received your check, she's well within her rights to advertise the saddle elsewhere.
Third, you should be calling her, not speculating uselessly about whether or not you got scammed. You really haven't given us enough information to figure out what's going on.