To Kill or not to Kill?

I'm currently worrking on the second draft of my WIP. Essentially, it's a dark paranormal/horror YA. There is a murdering ghost, a haunted house, a witch, etc. It's going quite well.

Except for the fact that I think I'm going to have to kill my main character.

Don't ask me why. For some reason, I just feel that the story will lose all its impact if the MC survives. But now I have to decide, who else is going to die?

Should I kill off her mother, to make the MC's death even more depressing? Or will that make her death lose some of its punch because she now has less to lose? Should I just kill the MC and have her mother be heartbreakingly sad about her death? *sigh* SO MANY DECISIONS.

And then there is the fact that I know some readers hate it when the MC dies at the end. I don't want to alienate a bunch of readers.

So, anyone out on the blogosphere have suggestions? Comments? Concerns about my mental health?

P.S.-- Have a gif of my writing process at the moment: