God Bless!
You would need to talk with the kidney transplant doctors to get the best advice in your daughter's case, she might not be on very much anti-rejection medicine but they would know what her individual situation is. She's in a better situation than certain people undergoing chemotherapy who have very little immunity. I just hope they start immunizing soon for all those who want it, there are people with almost no immune system that can't get live vaccines, the best protection for them would be to not wait for an emergency and the disease is spreading, but to make enough people immune that the disease couldn't spread far if someone tried.