If as you say ...."I don't care what you do behind your doors" then we are not in disagreement. The infant child in question is inside the grandmothers doors so she isn't a problem.
Rules are made and contracts signed to establish a 55+ community. I signed the rules but I am open to making exceptions if the need be and the overall impact is going to be very minimal. That is the case here. Sometimes rules can be broken and exceptions made.
Once again the child is here only about 9 hours a week, until a day care situation can be found..sometimes waiting lists are long. Nothing about this infant child being cared for here temporarily will impact our lifestyle or the rules we agreed to in order to live in TV.