"I know I can't help her, but I can feel sorry for her turmoil. How do I express that without sounding condescending or patronizing? I don't want to drive her further away be pursuing her either."
You don't. You just give her space right now, but be there when she reaches out to you.
Continue to figure out who you want to be and work on that. She will be watching.
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl