<human>: Hi everyone,

Just a little background,I had this cat since it was a kitten, maybe 6 weeks old.  Since my parents have dogs in the house as well, we kept her separate, in the laundry room or bathroom for most of her kitten days.  I would spend a lot of time in there with her, playing with her, feeding, etc.  After a while, we let her out with the dogs and they co-existed.  This cat would let me do anything to her; carry her, pet her, etc.  After she turned about 6 months or so, I moved out of my parents house, and would only see this cat once a week, but things were still good.  A few months later, we found kittens at my work and I brought one back to my place.  Since he was just a kitten, I brought him to my parents' house every week.  Everything with the original cat was ok, UNTIL I tried to introduce my kitten to her.  I carried the kitten into the room she was sitting in and she hissed at him (me?).  Ever since that day, the original cat would not stop hissing or growling at me whenever I come near.  I can still feed the original cat from my hand, but she will growl while eating and as soon as the meal is done, she wants nothing to do with me again.  What can I do???  Thanks in advance for any help!

Provide a brief overview of the text.
<bot>: Got a kitten, got a new kitten, tried to introduce the two with me holding the new one, and now the first one hates me.