HiCustomer Thank you for asking your question on Just Answer. By the way, it would help us to know:If I were you I would be glad that you no longer have this negative person as your friend and make friends that are true to you and understand that your son can not help what he says at times and if your friend took the time to get to know his condition and do research she would realize that she was really being unfair not only to you but to your son's condition he didn't ask to be born special God made him that way and you do the best you can and love your family unconditionally, just the fact that she has parties at her home should make people question her parenting skill and that alone shows you that she has no right to judge you or your family. That is not true about your son saying the word sex in school because I'm sure the school knows about his Autism and are equipped to understand the condition and what children can say even children without Autism say that word because it is so easily said on television, the school would work with your son to help him to understand that the word sex is a grown up word.
Don't be ashamed of loving your son unconditionally and remember the saying " One good friend is better than ten fake ones!" Just be more careful the friends you pick and make sure that they totally understand your sons condition. Do not correspond with this woman AT ALL she is nothing but negative energy and she needs to work on herself before she tries to be your counselor. Let her say what she wants the people that matter already know how she is in the neighborhood and if she continues to slander you and your family seek legal advice about your rights. She is going to dig her own grave just make sure you don't fall into it too which means stay far away from her.
Go on living your life as if you never meant her she will find herself alone and wishing she didn't lose a good friend. Being vindictive and vicious gets you no where but alone and miserable and misery loves company so don't be that company for her, you will be glad you cut all contact and sooner or later she will realize that what she is saying about you is falling on deaf ears and then she will not say anything anymore.Thank you again for trusting me with your problem.