Starlight Glimmer was assigned to find a new friend, and her other friends helped her do just that.

Pinkie Pie introduced her to Mrs Cake, and Applejack introduced her to Big Mac... only that didn't work out. So, Rarity tried to teach her how to make a good impression, and Rainbow Dash tried to teach her how to be cool... that somewhat helped. So, Fluttershy tried to help her over tea and a picnic... that was the greatest moment in Angel's life.