By all means ask your daughter’s doctor before risking transfer of c.diff. My understanding of it is that it generally only attacks people who have been treated with a broad-spectrum regimen of antibiotics, thus temporarily wiping out beneficial gut bacteria and making room for the c.diff bacilli to flourish if they happen to already be there, or if the person ingests some. They are not transmitted airborne, but rather by touching contaminated surfaces then touching food or other things you put into your mouth. But hey, I’m not a doctor and haven’t even played one on TV. I also have no idea what sort of antibiotics doctors may have thrown at your little girl to in an initial attempt deal with the infections that are now leading them to remove her tonsils and adenoids. Better safe than sorry. I’m sure your mom would agree. My wishes for a speedy recovery for both patients.