I don't know how to help

[Frostbite]

One of my oldest friends (as in, I've been friends with her the longest) has recently confided in me that she's been really depressed lately, lacking self-confidence amongst other things and that she's trying to avoid self-harming but with every bad thought about herself she gets another step closer to it.
I've offered my support and she's confided in me a few times since then but I feel as if I'm not doing enough. I moved away a few years back, so it's not like I'm seeing her everyday or can easily just pop over to her house for a visit when she gets particularly depressed.
When she tells me how she's feeling, I'm so proud of her because she's speaking up but I have no idea how to help or how to reassure her. I feel helpless because I want to do something that'll make her feel like she's not worthless but I don't know what to say or how to respond. I don't want to bring it up if she hasn't said anything, but I can't stop worrying.
Does anyone have an idea of what I can say? Any advice will be greatly appreciated. Thanks in advance x

[sarah newman]

Reassure her that she is not alone. Many people who get depressed feel like doing this. Let her know - like you have done already - that you are there for her and many other people care about her.
Ask her, are the scars and marks really worth it? Because once she does it all she will think about is hiding the marks.
Tell her that she really needs a counseller- someone she can talk to who lives near her. They are highly confidential and helpful. It's good you can be there for her and she can confide in you because that's taking the first step. Most people cover it up.
Tell her to get help before its to late because once she starts harming, it's a bitch to stop and it would hurt her friends and family who care for her if they find out- however be aware that this may not be the best thing to say as this might upset her and put more pressure on her.
But mainly make sure she knows she's always got you and she's never alone.