Pregnant 'Teen Mom 2' Kailyn Lowry keeps sobbing son Isaac Rivera from Javi Marroquin

Is "Teen Mom 2" star Kailyn Lowry made of ice? That's what some viewers are asking after the reality television parent refused her son Isaac Rivera, 7, visits with his stepdad Javi Marroquin. After the divorce, the little boy was more interested in being with his stepfather than his mom, and told his birth father Jo Rivera so. Why is Lowry ignoring her son's request to see his beloved father figure? Is it just a selfish power struggle? Does it have something to do with her pregnancy reveal?  'Teen Mom 2' Kailyn Lowry keeps sobbing son Isaac Rivera from Javi Marroquin