Would this have annoyed you?

I organised to meet up with my friend who i havent seen in a couple of months, I have no facebook or anything so its not like we talk all the time. She had a baby 2 weeks ago too. She came up and met up with me at this cafe and as soon as we sat down to order lunch a girl she knew walked past with a pram and started talking to her. This conversation lasted an HOUR about some girl on facebook called Sarah. So im sitting there eating my sandwich not even included in the conversation she's having with this girl and id have thought the friend would have seen she was having lunch with me and said a quick hello and left (thats what i would have done) but shes there talking forever and eventually my friend said she wasnt gonna order anything to eat cause she had to head back to pick her kids up from school. So we organised to meet up, didnt get to catch up AT ALL and i sat there eating a sandwich on my own while this girl and my friend are chatting away about the drama and crap thats on FB