Just wanted you to know I'm thinking about you. I can totally understand you're feeling of wanting to "crash". Emotional stress can be pretty overwhelming and our bodies finally just say "enough...take a break".
Just remember...you and your neice have lots of hugs and prayers wrapped around you. I'm not at the point I can send hugs to your sister, but I do pray for her. I know she's sick, and I pray that she finds the help she needs.
Hugs and prayers!
Amy