Baby Congrats Message What Can You Tell From A Message Like This One?

What can you tell from a message like this one? - baby congrats message

One girl wrote on the Facebook wall of my husband, it:
"Happy Birthday. Congratulations on your baby items. It's cool, by reading your wall to know. He seems to enjoy life. I'm happy. You've earned it. Bye"
Did you know that anger and sarcasm in the message? or is it just my idea?
You mean I should ask who is it? Even though I know that are connected prior to the meeting?