Hola Carmen!

My best friend is called Ana. We have known each other since we were young.
We lived in on the same road and studied in at the same school. We always went out to the cinema or just for a walk. She always heard me when I had troubles.

Esto puedo entender perfectamente, pero creo que es más natural decir: "She always listened to me when I had troubles."

She tried to help me. She's very funny and loyal. She's the kind of person who I can trust.
Now we meet every two months but we keep in touch by phone.

Y aquí, podría decir: "but mostly we keep in touch by phone." Pero sus palabras son perfectas. :-)