I got my first cat from a rescue - don't be surprised if she isn't social at first. She may be extremely spooked and take a few days to adjust.
My Sydney hid in the closet for about 3 days, and then she was like a shadow for a while. It took a few months before she was lounging on my lap. She was the exception amoung my brood - the others have become social fairly quickly. My littlest one was a snugglebun from the first moment.
In my 5 total, I've had one rescue who was very social, but the she turned rather mean at around 1 year old. She was loving and sweet, then she would shred the hell out of you. At age 5, she packed it up and left the home. It was never a bad home, it was just her personality. I guess she found a better deal elsewhere.
I guess what I am saying is that all cats have different personalities and sometimes rescues will have prior issues that affect them. Let her show you her personality, and don't be too disappointed if it isn't exactly what you expect. Some will bond instantly, others need some time and space to adjust. Occasionally you get one that is antisocial, and they need to be given extra space etc.
Happy fuzzing! I hope it goes well for you