Why does everything fall apart right before your wedding?

No matter how freakin' organized, planned and prepared you are for your wedding....SOMETHING will go wrong!  I always swore this was not going to happen to me, especially because I have communicated everything so clearly and detailed so that hopefully everyone is on board with what is expected.

But alas, with 21 days to go before the wedding, I had a melt down the other day when I received an e-mail from my hair/makeup stylist that sent me over the edge.

Here is the recap of the situation:

*  I booked my stylist in July, 2009 for me and 5 bridesmaids to have hair and make up done.  I negotiated a great rate of $200 for me and $70 each for my girls.  It ended up being a savings of $225-295 off of her regular rates.
*  Last month, two of the girls told me they couldn't afford to pay their $70 for hair and makeup due to financial hardships.  I told my stylist about this.  But she politely indicated that she was going to have to hold me to the original contract amount of $550 because we signed the contract.  I was a bit annoyed by both sides but could also see where each was coming from.  But this was exactly why I told everyone when I booked the stylist that I needed to know if they wanted the services or not since I needed to book her and sign the contract.
*  I asked my stylist if she would consider negotiating a compromise by allowing us to drop one charge of $70.00 and then allowing those 2 girls to each have their hair done for $35.00 each and they would do their own makeup.  This would mean she'd only lose one client and not two.  She happily agreed (via e-mail) and said she 'normally allows brides to drop one client if needed.' 

I thought the matter was resolved and everyone was happy.  But then two days ago, in the course of some e-mail correspondence confirming the time, schedule and location of the wedding day, she suddenly decides that she needs to go back and charge me the original contract amount again. The balance due, she said, would be $350 instead of $280.  She says that when she was discussing dropping clients, she didn't look at my contract to see what a deal she was giving me and she can't keep discounting services.

I had asked her in my e-mail if she would be sure to 'touch up' anything that needed to be touched up after she was finished.  She is doing 6 girls hair and makeup starting at 8 am until about 1:15.  So obviously the girls who have their hair done first thing in the morning may need to just be looked at and recurled slightly just before we start pictures at 12:30 pm.  She responded back and apologized but said that when I asked her if she would be able to 'add in services' like touch ups which would involve extra time, she realized what a steep discount she had given me.  So that made her suddenly decide to go back to the original contracted amount after she had agreed to let one girl cancel. 

Anyway, we finally resolved it as she responded to my e-mail and said that while she still plans to hold me to the original contracted amount (which means I am paying an extra $70 out of my pocket), she will agree to stay to do touch ups not only after she finishes with all of the girls but also during all of our photography.  Which I am hoping and assuming means that she will touch us all up real quick before the ceremony since we are taking all of our photos pre-ceremony.

Anyway, crisis sort of averted.  Thankfully, I am not in the state of mind to let these sort of hiccups get me down with only 21 days to go!