Answer: for cause
Explanation:
"For cause" in legal terms is defined as action that is taken in respect to contract termination, job termination, etc due to unlawful act, wrong activity , unauthorized actions and other such actions done by any individual.
According top the situation mentioned in question, the corporation can terminate Betty for cause as she has indulged in various acts that created dispute between her and the corporation.These disputable acts are considered as wrongful and for that reason she can be removed from company.