She became so important to them that they wondered how they had ever managed without her in the past. And the longer she stayed with them the more indispensable she became, so indispensable in fact that their one fear was that she might some day move on.
There is a very well-defined procedure that allows the Vatican to raise issues with a particular theologian about something that does not appear in conformity with the Catholic faith. It is not always easy to make this determination.