Okay, let’s tackle this. So Theresa has a certification in Interior Design from the University of Arizona, which is a reputable institution. She also has skills in various areas like interior design, space planning, renovation, and more. Location is Fort McDowell, Arizona, which might influence the rate. Considering her certification and skills, I would estimate her rate to be around $75 per hour, which is a reasonable starting point for an interior designer in the US. This rate is lower than what experienced interior designers might charge, but it’s a good starting point for someone just starting out or with less experience.