Bestie really struggles to feel included in something unless she is centered, & if other people are doing something she isn't interested in, she insists on changing the activity.
Which means it often feels like you cannot spend time with Bestie unless you are doing whatever it is that Bestie wants to do.
She's not able to just hang out if most people's attention is on something she doesn't like or understand.
So her world bends to her.