Needy friends

I have this friend of about 12yrs now and she's nice and have a good heart but is extremely needy. Its always some drama going on with her and her now teenage daughter taht is constant and on going. She calls me everyday or every other day and she will let the phone or face time phone ring a million times and she'll keep calling. She gets mad when I or anyone she's calling don't answer. Even if I tell her I'll call her back she'll end up calling me back on the same day and she always says "I was calling you back" NO I said I would call her back not the other way around. I find myself ducking her calls and looking at the phone or face time saying GET A LIFE or Give me a break!!!..When I don't hear from her for days which is very rare I feel like I'm on a vacation from her and to me that shouldn't be. My question is should I drop her as a friend and stop answering her calls?? And everytime I talk to her its a problem and she says "Its a lot going on" which when is if ever not something going on. She's trying to give a mutual friend of ours a party next July and she wants to talk about it all the time which is annoying. To make matters worse her, her daughter, and the whole family have mental issues and is hereditary. Her and her daughter get therapy every week who comes to the house but its so bad that the therapist after a year is giving them over to another peson which I had a feeling would eventually happen. They call this woman at all times of the night and day over every little thing. I guess the therapist had enough too and one more detail her daughter calls me too when she's having a problem with her mom. Its just too much!!..WHAT SHOULD I DO?????..Please give your honest advice. It will be greatly appreciated...Thanks in advance.

You need to be a true friend to your friend of 12 years and tell her what she NEEDS to hear. If that means that you lay some rules down to preserve your sanity, then so be it, because you can't help her if she pushes you 'to the wall'. While you make yourself available to her, she will continue to contact you all the time. Her ongoing therapy means that well meaning people like you will never be able to help her solve issues, rather you unwittingly complicate things for her, by trying to be a true friend and listening to her, while 'doing your head in' at the same time. Her first therapist has had enough and is moving away from it all - you need to look at this action and apply it to yourself for your own sake.