My girlfriend is depressed and we both don’t know what to do with our relationship

My girlfriend and I have been together for over a year now. A few weeks ago she told me she was depressed, and all I want is to help her get better. The only problem here is our relationship. Indeed, I love her more than everything in this world, but she’s constantly telling me that she is feeling overwhelmed because of any kind of relationship and I honestly get it. But we are in a long distance relationship so we barely see each other and when she’s not feeling good she doesn’t want to see me. She says she’s sorry because she knows I’m hurting and she says it’s not fair that she doesn’t get more involved in our relationship but she can’t help it. Again, I understand. She also says she doesn’t want to lose me and that even tho she can’t handle the relationship right now, she’s scared that if we were to break up she would lose me. I told her she wouldn’t, that I would always be her and I truly mean it. She’s the most important person in my life and if she needs to let me go in order to get better I support that. But she’s scared of ending the relationship, even though I’m pretty sure we both know it’s the right thing to do. We love each other but because of this it’s become all too much for her, and I’m constantly worried it’s about me when I know it’s not. So I think that if we were not together there would be less pressure for her and I wouldn’t expect anything from her relationship-wised you know ? Should I tell her that ? I’m scared because I don’t want to lose her either but what if we break up and she gets worse and she doesn’t want me to help anymore ? What if we never talk again ? I know it would be hard for both of us. But the fact that we’re long distance makes it even harder for us to handle all of this you know ? I’m lost to be honest.