Most likely she is suffering from a trauma. According to research, trauma would cause some memory loss most especially the memories associated with the trauma. This is a way for the brain to cope up with the trauma experienced. Also, this memory loss can be temporary or permanent.
D. Depressants. Marijuana can cause some of these symptoms also but as I remember it (as one who grew up in the '70's) it had little if any effect on coordination. Depressants mainly in the form of pills or alcohol will definitely cause all of these symptoms.
Certificate of Medical Necessity (CMN)