Hi Nightfury777:I suspect your post hasn't gotten replies, because you posted to a "help" area that doesn't get much traffic. You might want to place a similar post in one of the relationship threads.
Long-distance relationships are tough, even when mental health is not an issue. Did you have an exclusive, committed relationship with her, or were you in the early stages of dating? Was your relationship primarily over social media, or did you meet face-to-face for regular dates? Can you think of any situation or disagreement that occurred just before she indicated she needed "alone time"? Perhaps something stressful happening in her life?
Then it came out that she felt like she was under a lot of pressure so that she was trying to get away and sort everything out. Now it is to the point where she says that it is uncomfortable to talk with me
When someone is struggling with something and asks for space, it's best to respect that request and to take the pressure off. Sometimes, people just can't handle a romantic relationship, during various times of their life. Best to give her some time. Wait a few weeks. After some time, perhaps you can get in touch in a casual way (perhaps email or snail mail), just say something like, "I'd love to hear from you, when you are ready. I've been thinking about you and hope things are going better for you".
When people are pressed into something they aren't ready to handle, it can push them away permanently. Give her some time. In the meantime, you might want to spend some time on the "Bettering Board" and check out the lessons and suggested communication skills.