When someone loses a spouse, they tend to fill up that emptiness with stuff. That's what happens when people leave and there's loneliness -- be it children growing up and leaving the nest or someone passing away. Hogging is an unconscious action. The only way to get rid of it is to fill the house with people again. Do it slowly, one room at a time, have family move in again, whether it is just to visit or to live permanently. Don't leave her alone but give her a reason to declutter and make space for family.
It is completely fine for the worship team or worship leader to bring toddlers on the stage. Sometimes we are so religious that we become just like the Pharisees -- empty white-washed tombs. The church is God's family. And in the family, toddlers are allowed to be with mom anywhere they go in the Father's house. In fact, their angels see the face of God. Matthew 18:10 10 “Take heed that you do not despise one of these little ones, for I say to you that in heaven their angels always see the face of My Father who is in heaven.