How to respond to this super nice wall post?

[L]

Im incredibly self conscious of my online presence so this is why i need help

My old babysitter/friend from years ago posted on my wall "love your prom photos! Youre a beaut!"

And i have no idea to respond i havent spoken to her in years, but it was really nice

[Catelyn]

"Thanks! Good to hear from you! "

[aryan]

thankyou, dear

[mouse]

That's sweet(:
Just say "Thank you! We should catch up sometime. It was nice hearing from you(:"

[Aj]

I would first like her post then I'd say "Thanks!"

Just leave it simple if you don't like talking online. Then you don't get sucked into having a super long conversation with her but your polite and have acknowledge what she said.