That was a tough situation to get involved in.....but glad that you helped your friend.....what you did was being a true friend.....not going through with the suicide pact.
When I was going through some suicidal issues of my own, I met another lady in a similar situation......I was in the hospital & she called me telling me that she had OD'ed. I knew where she was & tricked her into giving me the address. When I tried calling 911 from the hospital.....they were totally confused....but I finally got through to them to have an ambulance sent out to the location where the lady was & they got to her soon enough that she ended up ok.
Caring like you did is an awsome thing to do....& you should be proud of yourself....since it sounds like she really doesn't know what is best for her, & the look she gave you was from someone that is not thinking very well. I hope she comes around....& when she does....she will appreciate what a true friend you really are.
Take care of yourself too....sometimes being around people like that can be draining emotionally....been there, so I can relate,
Debbie