Please help me, I need advice...I'm so broken

I have been working with a home health company for the last 8 years. At first I only worked a few days a week, and my "main gig" was nursing homes. After succumbing to a workplace bully, I left the nursing home, and began working full time in home health. I have had the same main clients for the last 8 years. I have worked with many families/clients over the years with this company, but I always worked at least a day or two with this one family. I loved my job so much, I swear I could have skipped the whole way.

About 8 months ago we got two new nurses on this case. Granted we only see one another for a few minutes, but....things have gone so wrong. First all, this is a client who requires a physically fit caregiver. Very heavy lifting, and busy work. We got a male nurse, and the other nurse......a very frail woman pushing 70. Now Im not one to discriminate against the elderly..I've seen some little old lady nurses with brute strength and mad nursing skills.....this lady is NOT one of them. From the start I had suspicions. A client who NEVER sleeps through day shift...suddenly sleeps like the dead......but only on her shift...when the parent is not at home *which is often* A sweet genteel client...is aggressive and mean...but only following her shifts. I suspect drugging but w/o proof or logical argument.....I say nothing.

Next I notice a pattern of unusual respiratory distress...but looking at records...only happens following her shift. I attempt to say something to her in friendly "hey did you notice" kinda way...then I find out she is very passive aggressive, and vindictive. Very next shift following her...patient starts howling with abdominal pain...soon.....we have projectile diarrhea...literally flooding the room. I find that a nearly new bottle of RX laxative was documented as "accidentally spilled" on her shift... I can do nothing but report the facts...not my suspicions. I tried talking to my supervisor because the patient who used to get excited and happy when I arrived started behaving aggressive toward me, when I asked what was the matter client tells me that whites are evil, and that this nurse told him that I kill people for fun...and that I want to hurt him.

I confronted her about it, Politely...she said that if I say anything about it she will accuse me of being a racist and get me fired.......that is how she takes care of white trash like me." Thinking that 8 years with this company meant something, and maybe the fact that 8 years......working 48 hours a week with the same African American family counted as proof of my personality......I decided to call her bluff and ask my boss for help. I was told point blank....."we didn't need that kind of trouble" and "work it out". On top of it all? My boss calls her and repeats everything I talked to them about, now I am just being beaten down left and right.

This family who once never had a unkind word is cussing me out.....they really seem to hate me. She spends her days here trashing me, the family repeats it all back to me....but let me know they take it as gospel. After 8 years.......I have truly built my life around this client/shift. My husband took a job that made sharing our one vehicle convenient...everything is situated around my job here. I can't just walk away. How can I defend myself? I'm so depressed and sad. I can honestly say I am miserable. Does anyone have advice?