Don’t know if official oppression is a felony, or not, but it still has an effect on her ability to hold a law enforcement position. Derogatory background information is a juicy target for defense lawyers.
No, that particular charge can only be charged as a Class A misdemeanor. That said, if there was another crime done in concert with that crime, such as certain assaults or bribery or graft, then the other crime could be charged as a felony. But the crime you named on it’s own, cannot. You can see the statute at: http://law.onecle.com/texas/penal/39.03.00.html
Considering the fact that she didn’t change gloves between “searching” the two victims, a suit for medical malpractice while practicing medicine without a license might be in order.