Pairing chins

Not 100% sure that this is in the right place but I would quite like some advice. I have a single chin (rescue, I think she is between 5 and 7 years old) who I have had for three years. I think she Is a bit lonely and I want to get her a friend (also female) to pair up with her.
I have been doing a lot of research on how to go about pairing up chinchillas and there seems to be many differing opinions on how best to pair chins up.
Could anyone who has successfully paired up same sex chins...

Pairing chins