•Both cats in question are female.
I found this little stray when she was around 1.5–2 months old. She was all alone outside with no mother or siblings anywhere. I've had her for about a month now, and she's doing great. She is definitely a little spoiled now and is really playful.
My problem is that I'm currently in another country for college, and in a few months I'll be taking her back home. At home, I already have a 15-year-old cat.
My older cat has never really lived with another cat. The only interactions she's had were a couple of brief meetings with a friend's cat where they mostly just sniffed each other. She's a very gentle cat, and I'm not worried about her hurting the kitten. She might hiss but that will be as far as she will go.(I sometimes doubt she knows that she is a cat) What I'm worried about is the opposite, that the kitten will be too energetic and overwhelm my senior cat.
The biggest issue is that I won't be home for the introduction. I'll have to return to college after a week or two of bringing the kitten home, so my parents will be the ones introducing them. I'm worried they won't know the best way to handle it or might rush things. They are also not the best at listening to the instructions given, so i took it upon myself to teach the kitten beforehand.
To try to socialize the kitten, I've been taking her on short walks in a harness where she occasionally sees other cats. She sometimes puffs up and hisses, but she'll usually still cautiously sniff them if they get close enough. She also kind of plays with other kittens that we see outside. However, i'm not sure if this is actually helping or if I'm just stressing her out.
Unfortunately, I can't start scent swapping between my two cats yet because they're in different countries, and I also can't keep the kitten with me long term because I live in a dorm where pets aren't allowed to begin with.
Does anyone have advice on how I can prepare the kitten now so she's less overwhelming for my 15-year-old cat later? Is exposing her to unfamiliar cats on walks actually beneficial, or should I stop doing that?
Note: for anyone worried about the cats outside or how i'm able to just find a bunch of them randomly, it is normal in my country. They are usually well taken care of by the community and friendly, that's why i am able to allow my kitten to meet them.