First off, never talk to family. Blood is thicker than water, and you see why the book tells you not to tell everyone about your sitch.
Next, understand that there is no "explaining" yourself to her. She's trying to control the situation. Just watch your actions. At this time, regardless of what you do, good or bad, she will scrutinize. Stay true to your actions.
When she does talk to you about her concerns, VALIDATE how she feels, but not necessarily her actions. Try to understand WHY she's doing what she's doing and know that she has a right to feel the way she does. This does not mean that you agree with her ACTIONS. Just agree with the fact that she is entitled to her feelings and emotions.
The books will go through all of that.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.