Answer: ethical lapse
Explanation:
An ethical lapse is an error or mistake in judgement that an individual commits which brings about a harmful outcome. It is usually as a result of an oversight as it really doesn't mean that the individual lacks integrity.
The scenario in the question is an ethical lapse. This is because the extra $25 she pocketed wasn't accounted for as it was an oversight and it wasn't that she intentionally stole the $25 or didn't account for it intentionally.