How can I comfort a girl ?

[Joe]

My nanny was looking on her Facebook page and she read something on there that was very sad I read it too and it was sad I started to cry but then she was crying so I stopped cause I love her and I wanted to be brave for her. It was about a little boy who lost his life today because he had cancer he didn't look very old they didn't say how old he was. I'd say he probably looked about between 7 or 10 years old. He looked very young. My nanny started crying her eyes out when she read that I just gave her a hug but I didn't know what els to do for her. Now she's saying she doesn't want to have a kid. Since this wasn't her kid or anyone she knew why was she crying ? How can I comfort her ? Im also a girl. Is it ok for her to cry ? She's 29 years old.