She blew off plans with you, without telling you. You objected. She got angry. You apologized. She said she's numb now. You said you love her. She poofed.

I would say either she's just nuts, or your account of what happened isn't accurate, or there's a context for all this that you didn't include in your post. As presented, it doesn't make much sense.

The only concrete thing I would say is I don't understand why you apologized for objecting to her standing you up? Just because she got angry?