The insider claims that Kate is tired of the couple's "look at me" behavior.
Prince Harry and Meghan Markle's royal exit was revealed on the night before Kate's 38th birthday.
As Kate and William were in Boston, the Harry & Meghan trailer debuted, followed by another during her Together At Christmas event.
Kate's trauma is understandable, but she shouldn't blame her brother-in-law and sister-in-law.