Hi,, first off you didn't say how old you two are,, but any way,, if I was you and this was happening to me,, i would just go on with living,, don't do anything,, if your family is choosing her side with out even talking to you,, well,, then, go about your business with your husband,, if you haven't done any of the things your sister says you are,,don't worry about it,, if your family believes her then,, they are in the same boat and will realize either sooner or later that you are innocent of all things she said,, don't go around them for a while,, let them all talk,, when you do go there and they say some thing,, then tell them if you are going to believe what my sister is saying about me with out even talking to me and believing her,, well then,, you don't know me,, or care about me that much not to even ask if things were true,,I know it will hurt not being around them for awhile,, but then they will see you were telling the truth all along,, good luck,,D.