My mom is in NA and is acting weird lately. Should I be worried?

Last night we were driving really late up to the gas station and she was swerving all over the road. It was so scary and she said it was because she took a muscle relaxer mixed with benadryl and swore she would never do it again and she was so sorry for putting me at risk. My mom is in recovery and just celebrated 9 years. She is taking some muscle relaxers for her back. But, I also found a whole prescription of klonapins in her room. Should I be worried? Are klonapins narcotics? Even if they aren't, should she be taking them? Help. Thanks so much