I've always been a cat person. My dad was a cat person, so we always had anywhere from 1-6 cats at home (mom was not happy about that but it was 2 against 1, hehe) , and my husband is a total cat person (I told him I wouldn't have married him if he didn't like cats!)
I think if your cat starts out very sociable and friendly, she will always be that way. Your friends cats probably just happened not to be "people kitties". Pandora runs for the hills when anyone comes in. Thor just swaggers up to them like "Hi, how you doin' - got any food?"
I wish you and Ally many wonderful, prosperous years together!!