Of course you're angry with her... let it out and try to let it go so you can heal a little.
And before you say STFU FireFly... what does she know...?

Yours may or may not work out... in my case my sis opted to literally disappear from the family unit... and leave two frail and ill parents grieving for her... so much pain! And so much for being a good christian

Talk to as many people as you can.... let it out, scream, cry, shout whatever it takes. But also feel the love that is in fact all around you... trying to reach you... from others. It's there, and that's what it's there for... to help you heal.
Then maybe when you feel stronger, talk to her again.
.