Accidental manslaughter. (2nd or 3rd degree, if the state has laws like that)...3-4 years in jail, monetary fines, ...and off the force. Do police officers have personal malpractice insurance for this?
Police officers have qualified immunity against lawsuits for actions taken while on the job. That's why people usually sue the department or the local government.
She's been charged with first degree manslaughter and second degree manslaughter. Max sentence is 15 years on the first charge and 10 on the second. If convicted she'll probably be sentenced somewhere in the middle.