Theory 3 is best one to consider.

For whatever reason your exW has now here own place and it has not gone unnoticed to her that this could help open a door with the girls. Heck theory 4 could be that she did this to enable a rekindling with them.

Her efforts may be weak but are becoming consistent. Give her a brownie point for that and then go take the top off your Jeep


R 25 years
M 14 years
S11 & S13
Working on it alone since Oct 2014
M in trouble a lot earlier (~2 years)
Feb 2016. 1st R chat in a yr.
Next R chat Aug'17
Still together