I'm needing advice in how to help a kitten socialize, allow to be touched without growling and also to get used to the other cats in the house. I adopted a 11 month old kitten who used to be friendly then had to be left alone due to the owner developing allergies. The kitten became sort of feral due to the fact she didn't have much contact. I got her and had her spayed but she constantly growls at me and my other cats. I have been keeping her in a cage to try and get her used to me, but anytime I pick her up, she cries and growls and wants put back down. I also have a Maine coon who isn't accepting her either. He sees her in the cage and will run and hit the cage and stick his paw into the cage which sets her off and she will start growling at him and continue to growl until he's gone. I'll let the kitten out and she'll run under the bed and that's where she'll stay. I can get her out when I bring her food but once she is done eating, she'll run back under the bed. I don't want her to live under the bed or not allow me to pet her. I've never had cats not get along or a cat not allow me to hold him/her. Can anyone give me advice on what to do? I think if I could get her tamed and friendly, she could be really sweet. It's like she wants to come but is too scared to do it.
Thank you
Kitty helper

Many cats do not like being held. The coon isn't helping matters at all.
My one cat is anti social and I have had other anti social cats. It is a part of some cats personality. Keep giving her attention and hopefully she will come around.

Sit in the room with her when she eats.
Periods through out the day offer her little treats some you can buy or offer a bit of tuna or cooked chicken, try to get her to take it from your hand.
Use her natural curiosity, invest in or make some toys that dangle and engage her in play.
Get a bird feeder to put outside of the window, so that she will have m ore of a reason to stay out from under the bed. Als o try to find her or make her a bed up high where she feels secure , she may be out of reach, but she will be in view of what is happening.
If you have time just hang out in the room reading, watching t.v. or opening up mail or even take a nap.
I would get her used to and comfortable with me before I would tackle the issues with the other cats.

To expand on bushg's comments: I would set up a room just for her. Having her caged and in an area where the other cat can get to her is just stressing her out and making her more fearful. If you can, give her a room with some food, water, and a litter box, so that she can get comfortable in the room and get used to you. Also, it will hopefully let her and the other cat get used to each other by playing footsie under the door, and make integrating the two easier.