Walaahi I hate being divisive and antagonizing against fellow muslims whom have taken the Shaahadah, but this simply too far. Who are you to tell the wife of the Prophet (SAW) that she is in hell? Why spout foul curses and celebrate the death of one of the most beloved people to Prophet (SAW), someone who I'll dare say, he loved more than Ali (RAW)?
Like I said, I hate being antagonizing and divisive against people who took the Shaadah and believe Allah (SWT), but there are boundaries one must not cross. You should curse the beloved (former) wife of the Prophet (SAW), lest Allah (SWT) curses you himself.