Has anyone lost a 'friend' planning your wedding? (Long)

It's amazing how you find out who your 'Real Friends' are when you plan your wedding. I had to ask a bridesmaid to step down because she wasn't reliable and being from another country she does not know what responsiblities came with being in a bridal party, not to mention she was in school (I postponed my engagement dinner TWICE because of her) and financially it wasn't possible for her. Well, after this happened, I asked if we were still 'cool' and she said 'Yes', needless to say, I haven't heard from her in months, even though I've called SEVERAL times & left messages, I finally got in touch with her today & she's beyond pissed at me for doing that to her. She said that I should have waited for her to finish school (she expected me to postpone planning for THREE months) so that she could help me. Then she proceeded to say that it wasn't fair to expect her to pitch in money for my shower and bachlorette party...OK.....Long story short, she made me out to seem like a b*tch for dropping her! Was I wrong? I tried to explain everything to her but right before I had her step down I told her was was expected of her & she said all she wanted to do was come and buy her dress (she doesn't know you have to order a dress) and show up the day of the wedding. I just feel horrible, not that I considered her to be a great friend anyway (we hadn't been close in years), but still.... I don't like people thinking the worst of me, when it was never my intention to hurt her & I apologized SEVERAL times for doing that.