When this mom is upset with her ex-husband, she asks Reddit:
Me (f36) and my daughter's "Leah, 13" dad (m37) got divorced 3 years ago. We used to share custody of her but now that her dad recently got diagnosed with cancer, things are a bit of a mess.
He and his family have been busy with his illness and since Leah hasn't gone to stay with him for 2 weeks now, he and his sister visited days ago.
They saw each other and he requested a private minute with her in her room. I gave them all the privacy they needed but as soon as I heard commotion I decided to enter the room.
I walked in on them hugging and both him and Leah were crying. I freaked out because I didn't know why she was crying but she refused to answer when I asked. She left the room and I immediately asked her dad what happened. He told me that he just told her about his diagnosis.