Technically, a broken home where one parent leaves (or one with many issues). Howeverm, homes with two parents can be broken as well. Very broken, in fact.
What makes a broken home, aside from one parent leaving, a messy, problematic, ambient. A place where there is distress.
Is there things that the LBS can do as parents to prevent all the negative side effects that come with separation abandonment and divorce for our children.
I would say there are things that can be done to the prevent negative effects. If all, I don't know.
Number one would be, I think, remember the MLCer is still the kids parent and regardless of what the LBS may think of the MLCer and what happened, not to put in on the kids or their relationship with the MLCer.
MLC affects LBS and kids, but it is a grown ups business.
Other things, try as much as possible to offer the kids a caring, open, safe, place. Allow them to make question about the situation and answer truthfully, in a manner they can understand, but without anger or pointing fingers - no good will come of making the MLCer the vilain before the kids eyes.
What should we call what we are building in our homes after the MLCer leaves?
A home. A safe, good space for LBS and kids.
Sometimes good things fall apart so better things can fall together. (Marilyn Monroe)