Schwäbisch would be quite a challenge to many Germans - even those from Bayern (Bavaria)! I can't help you this time around. I had also suspected that "Kat" might be diminuitive of "Katrin" or perhaps "Katrina". You are probably going to need to find someone with a greater knowledge of that dialect and area. This post should at least help to keep the thread up, so that someone more knowledgeable will see it. Perhaps you could be more specific about where in Schwaben? The dialect can vary from village to village!