A public rift has emerged within the family of the late Tejano singer Selena Quintanilla, with her brother Abraham "A.B." Quintanilla III revealing on Instagram that he has taken legal action against their sister, Suzette Quintanilla-Arriaga, who has managed Selena's estate since 2016. The dispute matters because the Quintanilla family has long presented a united front in preserving Selena's legacy since her 1995 death, and this public falling-out threatens that image while raising questions about the estate's management, particularly following the death of their father, Abraham Quintanilla Jr, in December 2025.

A.B. claimed on 1 September that there was "a lawsuit related to Suzette Arriaga" involving "years of accumulated situations, decisions and circumstances," though he withheld details citing the legal process. Suzette and her mother, Marcella, responded the following day insisting Suzette had never been served with any lawsuit, that no publicly filed case could be found, and denying any "theft," while clarifying that any disputed matter concerned the sale of an ownership interest in a company rather than Selena's personal items. A.B. then issued a further statement on 2 September, sharing a redacted letter dated 26 August 2025 from his attorney alleging Suzette had disregarded her "fiduciary duties" to the estate's beneficiaries, though Rolling Stone was unable to locate any publicly filed lawsuit.