She needs to feel that pain you feel when dropping off and picking up the kids...having to leave them for a few days or feel the kids pain as they leave you. You have been buffering her from most of that for awhile. Also there are memories at the house that she will get to relive as she visits. Each one of these things will make dents in her armor. Will it be enough??? Its all about timing. If her and "Wonderboy" have problems at the right time....then Bam!!! Keep pinging away but avoid the "Friendly Ex Zone"!! Your playing for keeps...The whole package...not just friends and will except nothing less.