USA, Canada / Emergency Visa to US [4]

Hello
I am new to the forum and have been happily married to a beautiful
Polish Woman for over 3 years now. She has been in the hospital for the last 2 weeks
due to a mental illness. We are hoping to get her mother over here to North Carolina to
help in the recovery. Does anyone have any info on emergency visa's? The doctors
are going to be writing a letter describing everything and are willing to fax it directly to the consulate. My question is- does anybody have any insight about what i should have them include to make things easiest to get the visa? I know this seems like a vague question ,but it is very important to have her here.

thank you and i am anxious for any info.
Jer