Despite having gotten to the same stage many times before, Twilight still pauses to greet her friends near the end, pointing out that "there's always time for a group hug".
Twilight's friends rallying around her for the intervention and showing her the ways her PTSD is hurting them, due to her misguided insistance that she shoulder the psychological burden on her own. Based on the first chapter of the sequel if they hadn't Twilight probably would have been Driven to Suicide.
Twilight using one of her loops to come out as gay to her parents, something she's been afraid of ever since a childhood friend rejected her over it. It turns out they already knew, because they found her Porn Stash
Twilight reconciling with Azalea, after the two fell out over the latter's reaction to an alternate Twilight becoming the Changeling Queen.