This is so, so difficult. I lived the majority of my life in blissful ignorance of the difficulty of anxiety and depression. Once I came to face it, i'll never be the same again. Prior to that I always saw negative people with anxiety and depression as simply negative people and couldn't understand why they didn't simply make the choice to be happy and not be anxious and depressed. But now i've grown to see that it's not that simple. Sometimes these things can be managed with lifestyle changes, diet, exercise, supplements, cognitive therapy,etc. Sometimes there needs to be external help, and this seems to be one of those cases. This is beyond your control. I know you feel helpless. You need to be sensitive to her situation but you also need to consider yours. If you truly do love this woman and know that you'll do anything, including giving up your time and well-being to help her, than i have nothing but respect and admiration for you. But if you're being true to yourself and feel that she's "holding you back" in a way or making it so that you're unable to live your life, and if you don't think that you want to spend the rest of your life dealing with this, than you need to act accordingly. I dont know how old you are, but chances are you have decades and decades ahead of you. I think that it's only right that you do what you can to help this woman, especially since you care for her. Don't feel obligated to dedicate your life to her if you feel that you must move on and live for yourself.