It's a trump card. If you go into court and you start talking about domestic violence and the danger the children are in, they say, “Oh, she's alienating”, so it's also that you're under a microscope, a magnifying glass, as a mom. If I do A, it's good for my child; if I do B, they're going to say I'm alienating.
Evidence of meeting #120 for Status of Women in the 44th Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was control.
A recording is available from Parliament.