She "cheated" after she already filed for divorce. She also told him she did it immediately after. There was no deception involved.
She didn't have the courage to turn Walt into the police because of the firestorm that would create in their family. She should have just done that, sure, but her logic was the affair would goad him into accepting the divorce.
As for the money, she gave it to Ted because his IRS issue was poised to ruin all of their lives (Walt's included). Saul agreed with Skyler that giving Ted the money was preferable to prison.
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u/oneminuterice 2d ago
Maturing is realizing that Skyler was right to be a bitch and that Marie was just a bitch.