He may have enjoyed the sense of power in knowing something she didn’t.

Both could be true.

He may have convinced himself the past was unfairly exaggerated.

Likely.

He may have believed telling Mom would allow Claire to “poison” a relationship that made him happy.

He had essentially said so.

That did not require him to be a mastermind.

Ordinary self-justification was damaging enough.

PART 47 — THE POTTERY CLASS

Mom did eventually join the pottery class.