More can be learnt about the unlikely pen-pals in this New York Times article from 2002.
Transcript follows.

Transcript
Aneisha,
I hope this finds you, Caleb and Jazzrufa in good health and happy. As you can see I received your letter. Judging from your letter you have lots of energy, lots of ambition, and are a very caring mother - very unique these days. I'm sure your projects will be super successful one day soon - at least I wish it so. By the by, you're right - I'm not "the guy that the media has portrayed", and I want to compliment you for keeping an open mind and being able to see through their hype! I also want to thank you for your concern, I am fine. Take care, and stay strong!
Sincerely,
John Gotti