How can I find out what nursing home hospice sent my mom?

Daffeney, in the morning (it's 4 AM here in NYC right now), call the Hospice organization that transfered your mom.

Was she tranfered from home or a hospital? If she was transfered from a hospital, you could call the discharge department of the hospital as well.

Have you been in touch with your mother, or with her caregivers recently?

Isn't there anyone you can call and ask?