I'm sorry...
Perhaps if you give her some space, she'll come to you.
I know, in RI, once they are an adult, there's nothing we can legally do, UNLESS they are a danger to themself or others. Only then can we have them committed for a 24 hour watch. However, there's a trust issue that results from that action, too.
Talking about it in a calm rational manner may be the best thing to do. Let her know that there are other meds she can try, if this one is not for her. It takes time to get the right "fit."
I'm sending prayers out to you and her. I know this is heartbreakening for you.
Shalom!