Lean on Me

We were driving in the car the other day when "Lean on Me" came on the radio. As I started singing the words, Raina asked:

"What's that song about Mummy?"
When I explained it was about having a friend to help you when you're feeling a bit sad, she said:
"When I'm sad, Mummy will be my friend."
"Of course I"ll be your friend," I replied. "And if I'm sad, will you be my friend?"
"Yes!" she said, beaming from ear to ear at me through the rear-vision mirror.