Why did my good friend stop talking to everybody, and how can i help?

[Mona]

Does she have personal problems? I always had family problems that I never told my friends because I made them my own second and separate life. There was my college life and there is my personal life. I am very social, but yet I don't like to bombard people with my problems. (That is my way of thinking). Sending gifts and, love every now-and-then(a couple times a month, not everyday or week) will let her know that she is still being loved and thought about, but you don't want to push her away by being annoying in her eyes.

If you are brave enough then just go up to her house and just ask her. Tell her that you are worried and confused. Get your group together and speak of reasons as to why you think that she would seclude a large group of you, but still be involved with social media. Speaking to siblings and parents is always another option, but I would leave this as a last resort so people aren't being dragged under the bus with you if there was any type of conflict.