I will not be keeping the name, I'm sticking with the name Siska. Sis from Sisco and Ka from Kaiah. The name Siska is originally from Indonesian. Researching the name online gives the following information. "Meaning of Siska name: livelihood path peaceful, independent, happy and perfect."
"The feminine name Siska is used in Australia. Other countries in which the name is used are Danish, Dutch and German where it is a short form of Franziska. Siska is not a very common used name."