We finally broke down and figured it out ourselves. Here's what my wife ended up doing.
Brown some garlic in 1/2 stick butter, then sautee the shrimp in thatRemove the shrimp, and make a roux by adding 1/4 cup flourSlowly add 2 cups milk, then add 1tbsp cajun seasoning and 1tbsp thai chili pasteToss in the skrimps and a box of angel hair pasta or fettucini
Angie turned it up a notch by adding about 15 sea scallops, which was a nice touch. In this case, I actually think bay scallops would have been better. Next time I think she's going to sautee an onion with the garlic.