How do I take a threat?

I did an earlier post which was titled No Subject.  I will try not to go into all of that again, just a little bit.  I am going thru so much.  My temp. job ended this week.  I have been feeling sooooooo overwhelmed by everything I have to do for my classes I am taking.  I was not hearing from any of my friends with the exception of one.  I feel that people are avoiding me because of my depression.  My one friend has another friend that does not like me for some reason.  Well last Fri. night this woman called my friend to go out to eat.  She also said to call one of my other friends. This friend ended up calling another friend.  These are the two that used to call me when they went out on Friday nights.  Just feeling the way I did with all that is going on with me, I felt left out.  I told my one friend that she could have called me or one of the other two could have called me.  I never said my friends friend who does not care for me calling me.  I was just upset that noone called me but was not upset with anyone in particular.  Well I made plans and invited a couple of friends.  To be honest I was no longer bothered about last Friday.  My only worry is about the two friends of mine not calling or emailing or something.  I really feel it has to do with my illness.  As far as my friends friend goes, I found out last August she did not like me.  I barely knew her so just wanted to know what the deal is.  We had all gone out to eat one night in Aug. and as we were leaving she went up to the friend I was riding with and gave her a hug and to say good bye.  That really upset me.  I thought it was very rude as she turned around and walked away.  I found out that night she did not like me for strange reasons.  one was the fact that I have ADHD and talked about it.  Well, the only time I talked about it around her was one night and I asked her if she could do some research (she works at a law office) about my rights at work.  I had been laid off the end of July and I believe alot had to do with my ADHD.  The other reason is because I had not found a job yet.  We are talking about the short time between 7/28 and 8/18.  I kept telling my friend to invite her to go with us to dinner when we go on Thur. nights.  I was taking the high road.  I was being nice.  I even sent her a sympathy card to her after one of her dogs died.  She sent me a really nice email after that.  After she found some info for me on my ADHD issues, I sent her an email thanking her.  I have always been nice to her when she comes to dinner.  Well, this brings me to the point.  I just got an email from her which surprised me.  She said she did not exclude me and that it just somehow happened.  I never once blamed her.  I would not expect her to invite me.  She went on to say she is really very angry at me for talking about her beind her back.  She said she had no idea what she did that upset me.  The only time was that one night in August.  I let my friend know how I felt because it was so extremly rude.  I was brought up better.  Even my other friend said not to get upset, I was the better person and I was taking the high road.  I am the one who told my one friend to ask her to join us for dinner.  She said she did not want to get in the way of my friendships and that in fact i am so far below her radar she has no feelings one way or another if I am present or not.  I dont know what she means by being below her radar.  Then she states "If I hear one more time that you gossiping about me, I will take some form of action, you can rely on that".  I don't know what to make of that.  I think it is time to end my friendships since they are friends with her also and I do not want to make a mistake of saying one word about her...which more than likely nice.  I can't talk to any of my friends about this.  I don't think she can sue because I say something.  I do not have a clue as to what she could do.  Any ideas or suggestions?

Hi Chelsi,

It sounds as if you have alot of drama going on in your life.  I dont know how old you are but often times, friends are just people to pass the time with.  Meaning that you more than likely are not going to having a long lasting relationship with most of them 10 years from now. 

If this girl was a friend or even cared about your feelings at all she wouldnt have threatened you the way she did.  It seems that the more you try to make things better with this the worse they get.  I agree with ELB that you need to try to develop new friendships with other people.  Maybe some time and distance from this situation for both sides would be best.