How do I help someone who's been having really bad luck?

How can I help someone who's been having the worst luck, bad things happening in their life? She wolnt stop crying (well over a week of loud wailing), it's really affecting her young children and adult children. And it's affecting my life thru my fiancé. Where do I guide her? I cannot take this on. And it's hurting the kids. It's coming into my relationship.