Suspect and blame Michael for the death of Carlo, but not suspect and blame Carlo for the death of Sonny?

I think Sonny's death directly after Connie's beating at the hands of Carlo is more obvious than Michael killing Carlo (well, they're both pretty obvious -- Connie probably heard about the deaths of the other heads of the five families and Carlo's disappearance would be very suspicious) but Connie never does suspect or blame Carlo for Sonny's death, correct? Does this happen at all in the book? Been a long time since I read it.

If she did, she wouldn't be so angry at Michael at the end of Part I.