Her doing so without receiving absolution is a grave sin against God and the sacrament of the Eucharist. (Communion)
I would suggest that you speak to your priest. In the Roman Catholic Church there are, in fact, different degrees of sin. I'm no theologian, but certainly stealing to, say, feed your starving children is less of a sin than cheating on your spouse. Thus, the wording of of the applicable Canons use the modifier "grave" in front of the word "sin" because some sins are in fact worse than others.
It's also telling that the woman went to the the unusual effort to confront the priest in the sacristy - where no one but the people actively involved in conducting the Mass should be - while he was in the middle of preparations for the Mass. That shows that she was quite obstinate in her sin.
Finally, if she went to that effort to tell the priest it seems pretty likely that it was "widely known to those present at the Mass."
I initially thought the priest had gone too far. But when I read that this woman entered the sacristy to introduce her lover it became clear that she was not victimized; in fact she deliberately set up a confrontation, using her mother's funeral to make a political point. Despicable.
Don't be silly.
All mortal sins are equal, it's just that other serious sinners don't announce themselves before demanding communion. If the priest is not aware he has committed no fault or violation of his priesthood.
The auxilliary Bishop, on the other hand...
Not that you really want an honest answer, but here goes anyway.
In the Catholic church, and, I suspect in many other faith traditions, there is a concept of some sins being more grievous than others. The Church classifies these as “mortal” and “venial”, with mortal sin being the more serious.
A person who has committed a mortal sin is not to receive Communion unless he has first received absolution during Penance. One who has committed a venial sin is not so restrained.
The Church does not consider it a sin for one to be attracted to members of his same sex, but it is considered sinful to follow up on that temptation.
IMO, the woman in this incident went way beyond even acting upon her desires; she actually got in the priest’s face and announced her state of sin just to provoke a confrontation. She was reveling in her sinfulness and mocking God.
“Is Communion denied to all sinners, or just gay ones?”
If the priest has personal knowledge that my soul is not in a state to receive Communion, he should not administer it (if he believes the Church teaching that God is present in the Host). For most sinners the priest doesn’t have that knowledge; this deviant shared it with him. Maybe they need to keep some unconsecrated Hosts available, to give these people a feeling of inclusion.../s
The American Catholic hierarchy has indicated they no longer believe in the Divine Presence when they administer it to people who bring public scandal to the Church, be they politicians or out-of-the-closet perverts. The American Catholics have in turn stopped attending Mass, believing anything, etc.