That's funny. From what I have seen family members have stabbed people in the back,so what makes you think another person wouldn't. And please get off the notion that many women get along with one another,especially black women. Regardless of what you say there is always competition towards females,if you are too naive to see that so be it.
When a person someone has trusted fucks over you,you damn right I will have my guard up with anyone male or female. Wow at you suggesting that her home life isn't happy because she doesn't agree with you.
"shit happens"
there's a reason why that statement holds true.
the most closest of friends can have conflict. the chances increase the longer they are together, literally.