Why are women so indecisive?

I don’t understand women. One minute she is happy being with someone or being good friends with someone and keeps that up for a long time, then out of nowhere, she decides that the person she was so comfortable with isn’t right for her. My girl and I agreed to go out of town and on the morning of that day, she decided she wasn’t okay with it, she wanted us to do something else. REALLY!? She then went on to insult my intelligence by claiming the problem built up somewhere in between making these plans. If that’s the case, why didn’t she speak up sooner so we could fix the problem rather than sit on it and bring it out later? I sweated making those plans and the best she can do is tell me to take a rain check? What the hell was she waiting for? The killer part was when I asked her what made her change her mind yet she had all the time to tell me earlier. Her response was, “You should have read my mind - it was obvious I didn’t like it!” Okay, in case some women do not know yet, men are not mind readers! How the hell am I going to read her mind when her actions told me something else? Now she is playing victim and I am left with no choice but to suck it up! Damn!