I don't think I am being unreasonable in the slightest but I need others opinions..
I recently got married, the wedding was lovely and everyone had a great time. However, one of my evening guests acted appallingly. She arrived very drunk with a friend in tow who I have never met, also very drunk. I don't mind people having a drink or having a good time and most of us were merry anyway. However, my five year old sister was my flower girl. She was up on the dance floor the all night, dancing with most of my friends. Our Mum was also on the dance floor and she was well supervised. Previously mentioned drunk friend started dancing with my sister, picking her up and swinging her around. She was so drunk that she dropped my baby sis headfirst on the dance floor. My sister was upset but okay.
Now accidents happen but she didn't apologise on the night, to myself or my Mum. My partner had words the next day in which the friend apologised but she hasn't said two words to me since the wedding which was almost two weeks ago. My sister still has a massive gash on her head from being dropped (attached a picture). I can't believe this so called friend hasn't contacted me to apologise for disgraceful behaviour.
Am I being unreasonable to want to cut her off for this?