From personal experience I can tell you that even if the plan is to leave the child or children in the care of a relative while the mother sets up (permanent) home in a country on the other side of the world, it doesn't take long for the mother to start missing her children and wanting them with her...and that's hardly surprising.
A very different situation to an OFW going off for a fixed term contract, knowing that she will be returning at the end of it, and that her sole reason for doing so is to help her kids and the rest of her family.