my in laws are toxic and ruining my life.. help?

To

so my in laws have never been easy. my mother in law denied our firstborn child during my pregnancy, called me a hoe, chased me at 39 weeks pregnant and i ended up hospitalised with torn ligaments in my pelvis. she denies ever doing it but she did and there were witnesses. that was 2015. i tried soo hard to forgive her and move on and things were going along ok until our son was recently born in april this year and his baptism was last weekend. his sister (my sister in law) assumed role of godmother without being asked. i awkwardly had to tell her that our relationship was not strong enough for me to ask her (just my personal opinion) and that i was choosing my own sister. my sister in law was present for my sons birth against my wishes and she turned up when my husband and i were supposed to be eloping just him and i and our kids but she got word of it and turned up. so its not like shes ever really missed out .... anyway.. so she didnt take the news of the baptism well as she wasnt godmother and REFUSED TO TURN UP... my mother in law came, kept huffing and puffing when the priest said "Aaron was made by love" she LAUGHED... got up and left half way through the service. i vowed to cut her off entirely after that. so then my step kids wanted to go to her house so i took them and dropped them out the front (had called prior to make sure it was ok) and she came outside abusing me for not bringing the babies over...but honestly, im done now, she isnt seeing them again, she and her daughter have done their dash me with as far as im concerned. my husband gets a call this morning from her whinging about how the step kids didnt even wanna come over the other day apparently (news to me) and he said "im not interested im going to bed i have to work tonight ". am i right to cut my mother in law and sister in law off entirely? i asked my husband how will we navigate xmas and stuff and he said we just wont have them here. he says hes done with their shit too. theyre so PETTY and i know all relatives and families have troubles but really... to what degree? putting ur daughter in law in hospital? it sounds like jerry springer lol im just wanting advice and confirmation im doing the right thing