Grieving a suicide

I have always been a very spiritually inclined person. For the past three years I have seen very close relatives die of natural causes, murder and now suicide. I have learned the process of grieving, but with this one it has just left me with so many questions, about life in itself. I have always believed in destiny and Karma. My question to you is: How do I make this type of death make sense to my spiritual and emotional grounding? It’s just so confusing since it’s completely unnatural. I would appreciate any input you can give me to start on my spiritual path again.