I have a 33 year old daughter and a granddaughter 6 months.?

I have bipolar with auditory hallucinations (hearing voices). I spend a couple of nites at my daughter's apt. and when I was in the guestroom I heard my son-in-law and my daughter talking about me. These were not the voices I hear in my head, they were just down the hall. My son-in-law kept saying horrible things about me, like "she has terrible table manners and she's all hunched over eating", "I don't want her meeting my family, my friends, etc. All my daughter said was "you are just saying that because she said your father was arrogant" and he answered "that's part of it". Other more horrible things were said and I couldn't breathe so I left around 4:00 a.m. I had to go down a steep staircase and I fell down twice plus my luggage alone went "clump, clump, clump. They only have two neighbors in their complex, but they both came out and helped me out and close the garage after me. My daughter waited another day to call me. She said that I was hearing voices that it was not her husband or her. And she said "I guess we're heavy sleepers", when I said that her neighbor came out. My daughter is feeding every 3 to 4 hours so she wasn't asleep. She said "we didn't hear a peep". Then she asked me what did the neighbors look like and she said they are not our neighbors; when she had once introduced me to them. She said the people I saw did not exist. We have being on a battle of wills. I told that I did not hear their voices after I left, all I heard were my own voices which I recognize. This happen about a month and 1/2 ago and there has only being a battle of wills; she keeps denying it was them and all I wanted to do is talk to her about why would I say that if it wasn't true. She has not e-mail or called in a month. Understand, I never felt comfortable there at any time, it was my gut something was off. I ignored my gut feelings and my son-in-law said those things so loud that I believe he wanted me to hear him. I can't believe my daughter is using my bipolar disorder against me. I told a friend and she said, those were real, not "your voices". I have e-mail and e-mail but no responses. I am so hurt I don't know what to do. The disrespect alone pained me and of course my self-esteem and confidence took quite a beating. I still feel raw inside.