<human>: Okay, so here's the back story. My husband and I are living with my mom while we're trying to buy a house. My sister, her fiancé, and two small children also live here. I work 12 hour days (2 days on, 2 days off) and my husband works 2nd shift. My mom and sister's fiancé work 1st shift and my sister goes to college. 

When I go to work I leave my purse in the trunk of my car. My keys are with me at all times except when I run to the bathroom or when I go on break, at which time someone is at my place. If someone at work took my money than they would have had to have known that I keep my purse in my car,  get to my keys, go out to my car, and put the keys back - all without being seen.

When I get home at 5am I don't always get my purse out of my trunk. I sleep during the day with my husband and we don't get up until after noon.

Anyway, 2 weeks ago I had $100 go missing from my purse. Yes, I'm sure the money was there and I didn't spend it. It could not have fallen out. And because I don't get into my purse évery day I have a six day window on when it could have gone missing.

My husband is quick to blame my sister's fiancé. We have a problem with his drug use (and he went to jail for a few months for selling it three years ago).

I brought the subject up to my mom, carefully and delicately tonight in her room. My sister overheard us and is now super angry at me. I don't know what to do. Please help Reddit

Provide a brief overview of the text.
<bot>: $100 missing from my purse. Accused my sister's fiancé of stealing it. Sister overheard me and super pissed