I HAVE A LOVED ONE WHO IS BI POLAR!

THIS LOVED ONE HAS CHEATED ON HER HUSBND, SHE WANTS TO PARTY EVERY WEEKEND. SHE IS NOW PREGNANT AND NOT SURE IF THE BABY IS HER HUSBANDS OR THE AFFAIR THE SHE HAD. SHE STILL TALKS TO THE MAN, IN PERSON AND ON MY SPACE. I AM TRYING TO COPE WITH HER MOOD SWINGS. SHE DOES NOT LIKE TO TAKE MEDICENE. BEFORE IT WAS BECAUSE SHE COULD NOT GO OUT AND GET PLASTED, NOW SHE IS PREGNANT. SHE WILL TELL YOU SHE IS IN A STATE OF DEPRESSION. HER HUSBAND AS STUCK BESIDE HER, EVEN NOW AS SHE WANTS TO RUN AND NOT BE A WIFE OR MOTHER TO THE OTHER 2 CHILDREN. I HAVE BEEN PRAYING FOT THE LORD TO BRING HER TO HER KNEES. I HOPE THAT THIS IS NOT WRONG. SHE JUST NEEDS THE LORD AND I AM LOST AS TO WHAT TO DO NEXT?