Is the reconciliation of the spouses valid after the intervention of the family and the mother's saying, "That's enough," upon seeing her son's aversion to his wife, followed by renewed deliberations that concluded with reconciliation?

As long as you have reconciled, this is good. You both must live together amicably, forgive what has passed, and strive to uphold the boundaries set by Allah. Know that achieving affection and understanding between spouses requires patience, overlooking some mistakes, disregarding slips and faults, and focusing on the good aspects of the other party's character.