Mojo will give you a more definitive answer if you do not hit a straight Enchi or another Stinger, since Mochis are very distinct.
When trying to prove out ANY gene, it need to be done in a manner that will make it the most recognizable, at least for the first pairing. Get the sousing out of genetics out of the way.
You need to remind her that a Stinger het Pied (if it proves Stinger) is IMO possibly the most powerful het Pied you can have. The effects of the two genes on Pied are polar opposites.