You need to realize that when someone really wants to be with you, they're going to scream it from the rooftops if you express a clear interest in them. Why do you think she has continued to delay and delay a response to your romantic interest in her?
She has screamed for me to get out several times in the past, then later act like nothing happened. That's just how she is.
Has she only told you to get out when you have asked her out in her home? What were the other instances of her telling you to get out? What were the exact events that preceded her kicking you out of her apartment those times?
How does she react when you ask her out in a public place? What's her body language like?
When you say "that's just how she is," do you mean that that's her personality and that it won't change? And if that's the case, why are continuing to interact with someone who's inherent personality hurts you so much? If not, what do you mean by "that's just how she is"? Do you believe she needs professional help? Has she behaved similarly with other people or just you?
What would you do if she wasn't willing to modify her behaviour for you? Would you continue with the friendship? If yes, why do you think you'd endure hurtful behaviour from a friend? Would you endure hurtful behaviour from your other friends (i.e. those you don't have a romantic interest in)? How do you feel about yourself in general?
I recognize what she is doing is not okay, but I'm not sure how to explain that to her without risking our relationship.
Do you think she recognizes that her behaviour is not okay? Does she apologize for her behaviour?
Why do you think you'd risk the relationship? Do you generally believe you're walking on eggshells in your interactions with her?
She told me I was a shit person, that she didn't want to see me again, to leave and never come back.
Has she said similar things to you before what she has kicked you out of her apartment? If not, why do you think it'd be wise to contact her after she said these things to you? If yes, what was her reaction when you contacted her after she said those things?
I eventually left when she threatened to call the cops.
Why did you wait until then to leave? Has she changed her mind while telling you to get out before?
She had never threatened to call the cops before.
Since this is the first time this has happened, I think it'd be best if you did not initiate contact with her until she reaches out to you first. This is for your own legal protection.
If she does reach out to you, all you need to say is that her behaviour hurts you and that you want to know why she reacts this way. You have to be prepared to end the friendship if she blows you off and/or continues with the behaviour.
For now, operate under the assumption that she wasn't bluffing and that contacting her will result in legal action being placed against you.