Cars 2: the spy mother (Holley Shiftwell x Young Stepson reader)

In the wake of the profound loss of his first mother to cancer seven months ago, Y/N McMissle, the youngest scion of the McMissle Family, finds himself ensnared in the whirlwind of emotional turbulence that inevitably accompanies such a significant tragedy. Against this backdrop, Finn, the family patriarch, recently exchanged vows with Holley, a pivotal moment that solidified her role within the McMissle family just a week ago.
Amidst this shift in the family dynamic, Julian, the eldest son, takes it upon himself to navigate the delicate terrain of acceptance and understanding between his grieving younger brother and the newly anointed stepmother, Holley. Recognizing her genuine kindness, Julian harbors the hope that Y/N will, in time, come to appreciate the newfound presence in their lives.
However, Y/N, still entrenched in the mourning process, grapples with the idea of a stepmother, struggling to reconcile the past with this unfamiliar figure attempting to weave herself into their familial tapestry.
As the three older brothers embark on their inaugural day of college, Holley seizes the opportunity to bridge the emotional chasm with Y/N. Understanding the significance of fostering a connection, she devotes time to nurture a bond with the grieving sibling.
Meanwhile, in College, Julian receives an unexpected invitation from Mirenda, an acquaintance of Finn. Unbeknownst to Julian, Holley and Finn share a clandestine past, concealed from the prying eyes of their children. Accepting the invitation, Julian unwittingly steps into a trap, unaware that his seemingly innocuous decision might jeopardize his safety.
Will Holley try to establish a good relationship with Y/N, will Julian be alive to see this?