man, it sounds like you really care about her and your family--but what everyone has said is true--it probably will just get worse unless she gets back on those meds. Why did she stop taking them? She apparently is suffering too--to be so jealous and even wake up acting like that (that is what you said, right?)
Do your children see her behave this way and see you two suffer and fight over it? While a family splitting is never easy on a child---neither is day to day misery in their home.
Extreme and unwarrented jealousy does tend to stem from insecurity (imo) and to add bi-polar to it--well, yeah, not fun for anyone. If she is so jealous of what you may be thinking about or doing w or other females that co-exist in you area--it's bc either she knows she's been a monster and that you deserve better--and is scared you may realize it, the "payback" thing, or it's bc of her own impure thoughts and feelings, again, of dissatisfaction w herself--There is nothing you can do but tell her to take her meds for the sake of your family or she will find her miserable little world in an upheaval.
that's my take--good luck--i have a friend who has been married twice bc she acted a lot like that--she is divorced again--but has finally learned some lessons and accepted herself and has been on meds for almost a year--a much happie and more down to earth person these days. again--good luck