Replacement dad?!

Brittany • 2k18 here we come!!
M My bestfriend is now 8 months pregnant with twin girls& the only person whose been there is me. I have no kids of my own but she's named me the godmother. Awkwardly enough though, it's birthing class time and she has nobody as a she asked me. I don't mind but how do I do that without either one of us feeling awkward??