Article continues below advertisementMacaulay Culkin is mourning the death of his Home Alone movie mom, Catherine O'Hara.The actor, 45, took to Instagram on Friday, January 30, to share a touching message in her honor.Article continues below advertisementSource: @culkamania/InstagramMacaulay Culkin starred in 'Home Alone' alongside Catherine O'Hara."Mama. I thought we had time," he captioned a photo of them in Home Alone, collaged with a more recent snapshot of the stars embracing. "I wanted more. I wanted to sit in a chair next to you. I heard you but I had so much more to say. I love you.