Must I Befriend My Husband Mistress Before There Will Be Peace In My Home?

Hi everyone, after what happened in my husband church on Sunday how he embarrassed me and his worker slapping me. I decided to consult his doctor friend to talk to him ,the only reason he gave the doctor is that the mistress saved his life when he wanted to kill him self because of a woman that died years ago in his church which left him confused then(I traveled with My last child when this incident happen) and the girl telling him not to kill him self is enough that the girl love him and that from that day he swear never to leave that girl nor let the girl feel bad in any situation.
He said that the girl is his life. so for me becoming pregnant is enough to make the girl feel bad so he now tries to defame me and make the girl happy.he suggested that the only solution that will bring peace to my family is me becoming friend with the said girl and serving her.and that I should beg the worker that I have forgiven him if I want him to accept me again.
Now the girl in question here is rude and proud. she insult me anyhow.she laughed at me now that am going through this with my hubby. today she saw me and started laughing that she must make me leave my home with my 5kids.
Now all am asking my self is how can I step so low to the extend of begging my husband mistress just for my husband to love me again. how can I befriend this witch of a girl. How can I worship this girl in my own house all to please my husband. A girl that saved my husband name with Baby m. Will that make me a peace seeker or a fool the more.will a reasonable woman do that?