made her angry ..... TT

after happily chatting with her yesterday , i was off my computer . After that i using my phone online awhile . She saw it then angry me . She hates people lie to her ... She said few people can make her angry .Why can't i just go sleep ..... I know she is angry me .... When she said never mind but i still know she very angry ....... I am a stupid guy...... I dislike to hurt people ... However it's happened to me ....... What can i do now ?????????