Well I am 15 yrs old and the a couple days ago she told me she wanted to get pregnant. She's turning 16 on sept 9. I told her not 2 make a mistake but she just won't listen... The worst thing is she is not ready to have sex yeah she's a virgin... she doesn't do anything on her own she relies on what me and our other friend is doing... She can't make a single decision on her own!!

How does a best friend react 2 this if got any advice let me know!! Thanks

Since she won't do anything on her own,perhaps it is going to be your job to educate her about the dangers and pitfalls of teenage pregnancy.
Here is a link so you can arm yourself with knowledge and tell her what the reality of her plan entails.
The National Campaign to Prevent Teen and Unplanned Pregnancy

I take it you are a best girlfriend and not her boyfriend.

Tell her that many teens get pregnant and then having a baby gets old and they want their own life back. Also that it is not fair to the boy to have to pay child support for the next 18 or more years.