<human>: Can you condense the text into three sentences or less?

I have a friend of mine who's a little bit older older than I am. She has been going through some bad relationship problems over the past year and a half. Although throughout everything, I have always supported her and listened to her as she needed me (usually entails a once a week drinking and listening fest).

About a month ago, I moved to another city and her relationship issues have gotten worse. She has been sending me non-stop text messages for the entire month I've moved out. I've replied sparingly, only because I feel obligated to remain supportive and friendly.

She has told me that a lot of her other friends have abandoned her due to her relationship problems. (They were frustrated that she refuses to leave her SO, and I admit I am too.) However, I feel like I should be a better friend and not abandon her. However, I am a poor substitute for an entire security blanket/support network.
<bot>: How do I tell an older friend of mine that I am just a friend, and not a therapist/emotional dumpster (but still remain her friend)?