My Mom Is95 And Taking Lorazepam 1mg Daily For Over

My mom is95 and taking lorazepam 1mg daily for over a year, recently increased to 2mg. She recently, several days, was prescribed escitalopram 5mg, and has started feeling very tired, weak and fatigued, also complaining of heavy breathing. She has mild heart failure and is on losartan 50mg.
I believe the 2mg lorazepam In addition to the escitaopram is having an increase in the level of the side effects.