These episodes will explain what Michonne was doing between issues #126 through #139 while she was separated from the Rick and the main group

I don't have the compendiums, but the trade issue soft covers are up to #22 with #23 coming out soon. The single issues are up to #139 with #140 coming out two Wednesdays from now.

I enjoyed #139, it moved some plot points forward (Michonne/Ezekial) and opened up the possibility of a new world/trade route with ocean travel. Not sure what to make of Carl/Lydia and the Whisperers

Now on to issue #139 (Spoilers ahead!!):