No. Teachers teach. The only thing they are are supposed to “lead by example” is their class. It is not their obligation, nor their place, to provide spiritual guidance or serve as a moral compass for any specific set of beliefs. That is the duty and responsibility of church leaders, such as Priests. I will agree, however, that she clearly didn’t espouse the moral fortitude we’ve come to expect from leaders of the Catholic Church. Her partner was a consenting adult.