I just finished a book with that premise and honestly, the pack dynamics shift is everything. The Alpha who cast her out now has to confront his own weakness, and her son, who's probably inherited some intense power, becomes this living symbol of his mistake. It's not just about her being stronger now; it's that she's built a new family unit outside the pack hierarchy, which fundamentally challenges the whole 'Alpha leads, everyone follows' structure. The old Beta and Gamma have to choose sides, and the Omega ranks, who maybe sympathized with her, gain a quiet leverage.
What I find most compelling is how the son's presence re-writes loyalty. The pack's bond, supposedly unbreakable, gets tested against the primal pull of bloodline and a child's innocence. Suddenly, the Alpha's authority looks less like strength and more like petty tyranny. I've seen some stories where the son becomes a bridge, forcing a new, more communal leadership style, which honestly feels more realistic for a functioning supernatural society.