No rush, you cant force ppl to become back your friend.
Take at heart, that ppl do change as they grow up. It is
called
"they grow tired of you...hehe" everyone cherish great
friends, but not necessarily cherish the idea of true
friendship.
So no need to be too upset.
You can call her up, and tell her that you still want to
be
her friend no matter what. Respect her wish to join the bad
group
or whatever. Of course, you can tell her your opinion,
but
you cannot force on her your opinions. If she persists
not
to be your friend after several tries, then you have to
respect
her choice. it is not as if she left you becos certain
cause/reason of
very inhumane, very injustice, etc experience that happened to
her.
Find out why she join the bad group from different sources,
without
annoying your friend. Once you have the correct
understanding, you
can provide right opinion.