Sister attempted suicide

So last Sunday, on the 7th, my sister attempted suicide. I haven’t seen her since because she got sent to get some help. She’s only 14. She’s also having major self esteem issues and was diagnosed with depression probably 1-2 years ago. She also started going by a different name and wants to be non-binary. (Just a little about her) She took a bunch of pills, but then she came up to me and our mom crying her eyes out saying she’s sorry and she can’t do it anymore and how she just wants it to end. I’m so thankful she told us because she would be dead if she hadn’t said anything. She got to come home today but I don’t live at home so I haven’t seen her like I said. But I see her this weekend. I’m nervous, not gonna lie. That Sunday-Tuesday I felt extremely angry towards her and how she could even think to do that. Anyways, how do I go about talking to her? Like that might be a dumb question but I’m seriously struggling with this. I’ve barely slept or ate since that Sunday because I’ve been so stressed out. Someone please help me. I’m lost.