What would you do in my situation?

Okay so i'll make this as short and sweet as possible, I've been best friends with the same girl ever since we were in 4th grade (im now 22 and she is 21) so that's a pretty long friendship. We even remained best friends when her parents forced her to move to Florida when we were about 15. We even flew back and forth about twice a year to see each other. So anyway, last August i started seeing my now fiance and we moved in together. Now my fiance makes very good money for someone our age working for a city construction/excavating company which allows him to bring home about $700 a week. Now my best friend new about that because i had told her all about him obviously even before we moved in together. So Her and my yearly visit was coming up and i was really excited to see her. so the week before she got here i found out i was pregnant and i was so excited she was the first person i wanted to tell so we called her and she literally said "cool that ruins my summer plans!" and i was so taking a back i had to tell her i had to go and hung up the phone. So we actually didn't even talk again until the day that she got here. So we drove the 35 min to go and get her at the airport and my fiance's younger sister came with us and as soon as *mary* gets in the car one of the first things she says is "i just cant wait to get laid while im here" and i was like what!?! and the look of shock on his little sisters face and his was so embarrassing because ive never known her to be like that at all. so we got back to our house and all she wanted to do was go to the bar and i was like "Mary, im pregnant there is no way im going to the bar with you" so she literally left my house to go stay with another friend that was willing to go to the bar with her and that made me really upset. So now all these things are things i could have just brushed off or even had an easy conversation with her that the things she was saying were making me uncomfortable but then it got a lot worse.The next day her other friend had to work so i went and picked her back up and on the way back to my house she told me all about how she only had enough money for her plane tickets and she was flat broke and didn't know what she was going to do..so then when we got back she waited until i was out of the room and then told my fiance the same story. So we decided to go play pool and when we got there he paid for it. So we were there no less then 10 min and she's completely leaning over the table, using the stick as a pole, shaking her butt..and were in a family bowling alley and there's 5 year old's running around all around us and i was livid i was so uncomfortable i felt like we were with a stranger. So after we left there my boyfriend also paid for her lunch, 2 rounds of pool and 2 bowling, drinks at convience stores,dinner, anything she asked for. So then she said she wanted to go to this one store while she was back home so we go and when were standing in line i see her reach into her purse to get something and i see her wallet wide open with like $300 in it..and my fiance had just spent about $400 because he thought she had no money and wanted her to have a good time. So i didnt say anything until after we dropped her off and he was furious, but what made it worse was then she didnt talk to me the entire rest of the time she was here until she needed a ride back to the airport even when i texted and called her.so then the other friend went to FL for the week after *mary* left and i didnt hear from her that whole time either..only after that girl left then was she concerned about why we werent talking. So i stopped talking to her all together because i was so mad, and so yesterday she sent me a message on Facebook and said "i hope your relationship is worth ruining a 12 year friendship just because he wont let you talk to me" and i was like really are you that oblivious to what you did wrong. So basically after hearing this story do you think im right in not talking to her dispite our friendship?