I posted something earlier about this but thought it better to start a new post as it's not my name I want in Russian, it's a Russian diminutive from my name!

In my other post I said I stayed with a Russian lady who often called me Катя because I think she found 'Caroline' difficult or just strange to say. I know the name 'Каролина' (?) exists, whether or not if it is Russian or Slavic, I don't know.

My main question is, can a diminutive, pet name, be formed from 'Caroline' and if not, what could be made from 'Каролина'?