Joy in Nursing

Hi, I'd like some advise. I am having a hard time lately with a co worker who is an LPN and has admitted to me she is bipolar. She's been talked to by management about her moodiness and she tells me her meds are being adjusted. I wonder if her meds are wrong because she's been telling me she doesn't take them all the time, that might be part of the problem. She is very moody with staff and unprofessional, telling a nursing assistant to check a patients blood sugar. She knows they can't do that. She makes the work environment so tense, like we are all walking around on eggshells not to upset her. She is pleasant with patients in view that I've seen. This last situation feels like it's spiraling out of control with her attitude. I feel scared of her and so do other staff members. Her behavior is very childish, like a child having a tantrum because they can't get there own way. I think management is scared of her too. I love my job, just not working with her. I feel she's putting herself on thin ice with management and may get fired soon because her unprofessional attitude keeps getting back to them. Would reporting her to the state help? Could they intervene and get her the help she needs? Or should I suggest to her she needs to seek help and get her bipolar meds stable. I'm scared of her reaction, she gets very angry quickly to the point I've thought she wanted to strike out at me. What should I do?