Mother-in-law Hell

my husband and I have been together for 5yrs and he has this ex that he was together with for 2yrs I think or something of that nature…anyways she still calls this girl her daughter and has never called me anything of that except for “my son’s wife” aint that ’bout a blimp…she got married and invited the ex to wedding but yet told me that I better not start a fight at her wedding but the ex threaten me!!!! we (my husband, his mom, her husband and me)had a so called family meeting but she tells me that she don’t like me…lmao…I cant do anything right but laugh at the fact that to me this is all ignorance more from her part right? so what the fudge..how am I suppose to feel? oh and then because me and my husband didn’t have a wedding…yes we didn’t invite anyone..you know she had the nerves to get mad even though she told us if we got married she would not come. now what kind of bull#%it is that to tell someone? I have so much animosity for the way that she treats us and I try to be the bigger person and not say anything to her only because of my husband and I put his feelings first because he loves his mother…but me..man man man I have alot of words for that woman…what should i do?