What is a good song to dedicate to a friend that I just reconnected with?

I have this friend, Ashley. We were sorta close in high school and
then since she was 2 grades higher then me when she graduated we lost
touch. I graduated a year ago and now we are reconnecting. We are
actually really close and I look to her for a lot of advice. What's a
song I can dedicate to her to tell her how much I appreciate what she
does for me and how much she means to me?