I completely understand your need to keep somewhat of a distance for your own recovery, but I also know that your daughter has a serious problem that cannot be ignored.
One of my friends succeeded in taking his own life a few months ago.It was so difficult to understand why.I just kept wishing there was something more I could have done to help save him.If I knew your daughter, I would do my best to put her in the hands of people who could help.You did a wondeful thing getting sober, don't let this bring you down.She is going to need you to be clear minded when she comes home, and you are going to need to be able to make some choices without the fog of alcohol.