Hilary Tisch, one of New York Giants co-owner Steve Tisch's daughters, is dead after taking her own life ... TMZ has learned.
Hilary attempted suicide over the weekend, and died Monday in a hospital. according to sources with direct knowledge. The Giants honcho mourned his daughter's death in a statement to TMZ ... remembering her as "a kind, caring and beautiful person."
Steve adds ... Hilary's "mother, sisters, brothers and I are devastated by her passing. It leaves a hole in our hearts and our lives. She, like so many others, bravely fought the disease of depression for as long as she could.