Hi, My 88 Yr Old Mother Has A Heart Condition

Hi, my 88 yr old mother has a heart condition (ideally 3 heart valves would be replaced, one with .7 stenosis). She also suffers from insomnia (ave 4.5 hrs of sleep a night). She has been taking lorazapam (1 mg) for 1 yr which has dramatically affected her quality of life. She asked to increase it recently to 1.5 - her cardiologist is in agreement. Her general practitioner stopped the prescription as he is concerned about dependency. Had her try 2 other drugs - both caused grogginess and nightmares. Please advise my next step as I need to have her see someone who can help! Thank you, Nancy