Just her throwing in how people are TERRIFIED to tell her story that her fat husband gets made fun on the internet really drives it home. She is just as bad - if not worse - than Pat.
Not to elbow
@quasi101 out as professor of logic at the Academy of Science . .
The Bhagavad Gita has an a priori heuristic with which one can assign the appropriate degree of fault based upon a supposition of an individuals mental state under which true malice can be determined.
"From passion comes confusion of mind, then loss of remembrance, the forgetting of duty. From this loss comes the ruin of reason, and the ruin of reason leads man to destruction."
It's clear that for reasons having to do with substance abuse, mental illness and a total lack of impulse control Patrick is in a constant state of confusion of mind and the results are clear.
On the other hand Niki does not obsessively reply to stlakers. While she may lack impulse control regarding her medication it's nothing like what Pat regularly exhibits. It can therefore be supposed that Niki is in control of her faculties and is making these immoral choices after having, however briefly, considered them. If she were to take the path of duty she would either cure his behavior with care that he likely never received or leave that task to others and pursue her duty elsewhere. There are more ways than one to be an unfaithful wife.
TLDR Morality-wise: Pat>Niki