There are only two possible ways this situation can be understood: either the second marriage is adulterous, in which case she is demonstrably unrepentant, or it is not adulterous, in which case where’s the sin? Is that what you are asserting: that her second marriage is simply valid, no confession is necessary, and she may receive?
Do you understand that mercy, like absolution, requires repentance? If her situation is sinful, and she does not intend to change it, then mercy is impossible. If her situation is not sinful then mercy is unnecessary.
To stop talking about doctrine only makes sense if we intend to ignore the doctrines involved, otherwise there is no basis for any action the church takes on the matter.
Compassion cannot go so far as to seem to either ignore or condone sin. It really seems that your position is that, in the situation you described, there is no sin in the second marriage.
Ender