So today i got some much need time with an old school friend, my plans where to spend time with her and her kids and then go to my mothers at 2! So i arrive at my friend's at 11 and go out. I totally forget about the time and my mum calls me! She is really fine with it and we arrange to see each other tomorrow. When i get home i phone her and shes really angry! I said sorry and tried to explain but she cuts me off and hangs up on me. It really hurts as we are very close. So next thing i get a text saying how im a bad daughter and that she's disappointed in me. I have ignored it as it hurts. Ive always been there for her. I stuck by her when she got divorced and have been good. What do i do now? Wait till she comes to me? Ignore her for a few days? Or phone and apologise?