My SO told me she tried to kill herself last night. She took a bottle of pills and thankfully just got really really sick. And she's having a lot of stomach pain

She won't go to the ER or urgent care. She promised me she'd make an appointment with her primary, but she's not going to be able to get in right away.

And she doesn't have a therapist or psychiatrist yet. She can't get in until the end of September. 

She just keeps apologizing for being so selfish. I know she isn't. She's hurting and needs help. But I'm having trouble coping. My best friend killed himself and she knows what I still go through from that.

Now I'm going to constantly worry about her. 

But how can I help someone that won't really help herself. She's not suicidal anymore. She keeps saying she realizes how hard it would be for me. But I don't want her to not harm herself for me. I want her to live for herself. Because there's so much more she wants to do and see. I want her to see in herself, what I see in her.

How do I do that? What can I do to help her? Especially when she refuses to even go get seen until she goes to her primary.