found a cat under my car in huai khwang

Last Sunday I was going to my car in the soi near Huai Khwang market when I heard small crying sounds. I looked under the car and there was a cat, very thin and dirty. She was scared and did not want to come out at first. I am sorry for her, so I bring some tuna from 7-Eleven and put it near the tire. After 30 minutes she came out and eat everything very quickly. Namtarn is my cat at home, she is 9 years old now. I thought maybe the new cat will not like her, so I make a small room for the new girl first. I did not expect how quickly they accepted each other. Namtarn just watched from the door, then she go back to sleep. The vet check said she have fleas and small wound on her ear, so she need one week of medicine. I recieve the bill and was a little shocked but okay. I think it is important to do it properly, I cannot just leave her in the street again. Now she have a name, Mugi, and she live in the bathroom for now until the vet say she is good for living with other cats. I am not sure if I can keep her forever. Our condo juristic office is strict about pets so I need to check definately before I decide.