Email to Ukraine Problem

I am trying to email some friends in Ukraine. The problem is her email address contains cyrillic characters that my computer changes or ignores when I try to send it. For example, when I send it to abcdбefgh@123.com it will only send it to efgh@123.com and will ignore what is before the б. Does anyone know how to make my computer send to the correct, whole email address?

Thank you,
Rob

It's impossible for any email address to contain cyrillic so most likely there's a typo in the address.

Thankyou very much. The handwriting was bad so I guess I read it wrong.