My future father in law called me a bitch 🤔

So my fiancé has been in the hospital for 3 whole months. Last week he had a huge surgery where we almost lost him his hear was giving up on him. Anyways long story short my fiancé had called his father who lives in Boston. (We live in California) to be here for his surgery in case something goes wrong he wants his family close. Cool his dad flew out here in a Saturday the day AFTER his surgery. Monday came and his father told myself and my future MIL we could go home for the week and he would care for him at the hospital so we don’t use sick time and use it when he goes back home. We said ok! Well MOFO left the hospital 4 days later to go party it up with his family and did not come back for 2 days! I was livid! I messaged him and told him that he was not here to party he was here to be with his son and if he doesn’t want to help he can go back to where he came from. And I told him I was thankful my son has an amazing father who will always remain by his sons side during the good times and the bad times unlike others who can’t seem to get their priorities straight. Well he responds and tells me he isn’t going to put up with my shit. And then goes off and tells me “fuck you bitch” he then goes off and blasts me on social media saying “fuck the haters fuck that bitch” but didn’t put my name on it of course but I know it was directed towards me! I kept this between him and i. Well his bitchass calls my fiancé tells him i insulted him called him names and he is leaving LA to go back home because he doesn’t want to see my face. My fiancé said ok leave ✌🏻 I did not tell my fiancé the crap his father told me he asked me why his father was going off on social media. I acted like I didn’t know and kept it moving. And not I’m getting messages from his dads cousins calling me names and talking smack to me about how I disrespected my fiancé’s dad and how I’m a bitch. Blah blah but he failed to tell people he insulted me and went off on social media. 😡 ah gets me so mad! But I’m keeping my composure for my fiancé’s sake. I didn’t call him any names but he’s always been a deadbeat dad! Never been fully involved in my fianceslife and even after my fiancé had a major surgery and could have cost him his life he didn’t care he chose to party it up! Ughh. Your thoughts people. Please 😭