Pen, I see no one has answered you. I saw this yesterday but don't think I'm in a good positistion to answer, with what has happened in my sitch in the last few weeks, I would be overly worried/cynical.
I think you need to pay close attention to things and watch and monitor. This might be normal, but it also could be a critical time where she might be grieving or thinking about OM and deabting reaching out to him.
I would suggest an MC appointment together to discuss this new tension and see if the MC can help resolve
M39 W41 Two children WAW bomb dropped 11/7/09 Piecing Aug 10 - Nov 10 No longer piecing...Nov 10 Separation Jan 11 EA ends again Feb 11 Piecing attempt #2, Mar 11