One of my close friends treats her 20 year son like he's 12 years old. She weighs him weekly, tells him what to do, where to go and is completely controlling towards him. He is immature but mainly because of how he's been treated. She loves him dearly but can't seem to see he's an adult. He's desperately unhappy and has confided in me about suicidal thoughts because of this. How can I help him without losing my friend? I have spoken up for him many times but she is very strong minded and doesn't react well to criticism.