First thing, I am truly sorry to hear your loss. Losing a mother,is never easy. This stuff should never happen but it does all the time.
First contact a lawyer and see what they say. If you want a referral to a malpractice attorney, let me know.
Second you need to file a complaint with the Ohio Medical Board. Click here . The medical board will investigate the case and make a determination as to the role the doctors decisions played in her death. If the doc should not be practicing, they will either suspend or revoke the license.