<human>: My friend of 4 years I met at a time in my life after a breakup. I was going out a lot and trying to have fun so naturally we would go out and drink. We would drink too much. 

Now we are a little older, my friend moved closer to my house and she wants to hangout more than we did before. She invited me to go out recently. I went but quickly saw how it was not fun. She drank too much too quickly and I ended the "fun" by getting her a ride home. I was embarrassed to be seen with her, she was so intoxicated!

She invited me out again recently to a house party but I was reluctant from the past encounter. I didnt go, but I received many messages while she was there and phone calls. One message I could tell she was too drunk to talk, the only thing I could understand was  "trying to go home" the next thing she sends are messages on Facebook that ask me to do her a favor, at 5am. 

I know she hasn't been having great connections with her boyfriend and I already pointed out to her that it sounds like she is using him for a place to live and out of being codependent. Im afraid that she wants to use me as an excuse to her boyfriend as to why she was out so late. Im not certain this is the favor she needs. 

The other day we were supposed to hangout but she flaked on me because she made plans with someone else last minute  (double booked herself). Id just like some outside perspective, is this rude of her to do?

Can you condense the text into three sentences or less?
<bot>: Friend of 4 years likes to drink too much and wants to use me as a crutch when they're in trouble/Is this rude of her or am I overreacting?