I believe that this “lesbian” girl decided to provoke a confrontation. She may or may not have been coached on what to do by the gay activists. However, she decided, for whatever reason, to pick this fight at her mother’s funeral. She decided, for whatever reason, to force the issue of the communion, and then when denied, go into “liberal outrage” mode over the incident, so as to attract sympathetic media coverage.
The question should not be, how can a priest deny someone communion at her mother’s funeral mass. The question should be what kind of person uses her own mother’s funeral to make her political statement.