@kev Kev, I just read your post via your RSS feed. My sincerest condolences. Losing your sister Lisa at such an early age is heartbreaking. Knowing the circumstances deepens the sorrow. Depression and mental illness are often difficult to detect, even for doctors. Many of us hesitate to share when we cannot handle everything that life brings. Even the strongest among us struggle at times, and from what you wrote, it seems your sister was suffering silently for a while.
May the Lord keep your family in this time of tragedy and bring healing to you, your mother, your nephew, and all of your loved ones. May He give you comfort and peace as you grieve. I will be keeping you and your family in my prayers.