Michael went away soon after the Tahoe bedroom shooting, then was away for Christmas, New Year comes home and doesn't even offer comfort and support to his wife Kay who had just had a miscarriage
Then goes and talks to Carmela, his mother about losing their family instead of Kay, his wife Go figure!
How did Mama know Kay had lost their baby?!
No doubt that was painful to watch
How did Mama know? Tom wouldn't have told her Kay unlikely So how?