Gay & Lesbian Teens Support Group
This community is dedicated to teens that identify as Gay, Lesbian, Bisexual or Transgender or are questioning their sexual orientation. It's a supportive community where LGBT & questioning teens can give or get advice from their peers or just hang out. Please do not join this community unless you meet the description above. Thanks!

In the meantime the best you can do for her is be a friend who she can rely on and if needed try and make sure she has access to suicide hotlines if she needs them.
I hope I helped xx
As for what you personally can do for your friend, be there for her. Make sure she knows she is important, and that she is loved by you. Listen to what she has to say, and be sure to remind her how much she means to you. Take her to local LGBT spots, depending on how old you both are, you can look up some LGBT youth safe spots in your city and take her there. She will feel immensely better just by being around other people like her.
And if you become really worried about her committing suicide, call the National Suicide Prevention Hotline at 1 (800) 273-8255 . Good luck, and I hope you and your friend get through all of this.