Solo Chin

I've had a single chin, Chloe, for about 6 years. I got her as a single chin and as far as I know she hasn't lived with another for any significant period of time. Hearing the horror stories of chins fighting made me nervous. Also, if they don't get along, I do not have room for another cage the size of Chloe's current one. Though I'm sure I could figure something out if it would possibly make her happier.
I've heard mixed opinions on the subject but generally it seems like it would be healthier for them to be in a small group or a couple.
I wouldn't mind having another chin at all but I want to be safe about it. What do you guys think? Thanks!