lying Leos getting caught

I live with a Leo female, I'm a Gemini. I found out that she had lied to me and I was hurt, I told her that I didn't like the fact that she lied to me and she said she couldn't understand why I was acting like this it was a big deal and then she left to go back home to see her brother. I hadn't heard from her for 3 days so text her telling her why I was hurt that she lied and that I didn't; like how she brushed it off, that was yesterday afternoon and I still haven't had a text back. Why is she acting like this? I'm so mad that she is giving ME the silent treatment after she was in the wrong. Shall I just leave it now? will she finally text me back? how can she possibly be mad at me, I'm so lost

Help please.