How can I help my best friend with PPD?

My best friend is suffering from ppd and I’m unsure exactly how to be there at this point. Every morning the first text I get from her is something negative. She’s mentioned she’s depressed and has anxiety so I urged her a couple times to see her doctor since she’s had this before. I’ve tried being the shoulder to cry on and that didn’t work so I told her what she tells me “to get her shit together” (she’s a hard ass) and that didn’t work. I told her have a day to herself and get pampered and she did but said it didn’t work and unfortunately I can’t go visit her right now so I’m not sure how to help her.

Also, I won’t reply to comments because I’m unsure if she has this app and I don’t want her knowing I’m writing this.