I witnessed one of their live-in CNA's, Cory, yell for an hour in another language on her phone while she was cleaning the bathroom. Then Cory came into the kitchen where my grandmother and I were trying to talk loud enough to drown out the noise of Cory's tantrum in the bathroom, and Cory started yelling at my grandmother and I in English for 45 minutes! My grandmother, who suffered from a severe stroke several years ago, was holding back tears and terrified. I tried to deescalate the situation by telling Cory I was going to speak with my grandfather (who was recovering from surgery in the hospital) and he would speak with the head nurse to review my grandmother's medication & food schedule that Cory had taken it upon herself to adjust. Medications that were supposed to be given in the late afternoon, Cory decided should be given to my grandmother at 8am; even though the instructions were written on the care sheet with the times. Cory also kept insisting on making a large avocado and chicken salad for lunch for my grandma, even though I repeatedly told her that my grandmother cannot eat that because the Vitamin K content is too high and will interact with her Coumadin/Warfrin... Cory's response to me was, "You don't know anything about medicine! I have 6 doctors in my family!" I told her I would speak with my Grandfather who would consult my Grandma's doctor and the nurse, and Cory told me, "No!! Don't call your grandfather! He's an idiot! He doesn't know anything about medicine either!!" Then she grabbed the pill bottle and shook it in our faces to show the prescription... Cory's screaming temper tantrum caused my grandmother's blood pressure to skyrocket which is dangerous for someone who has heart failure, a leaky heart valve, and is missing half her brain from a massive stroke... What seems to have set Cory off was that I was going to use the chicken breast that my grandparents bought to make them Chicken Picatta because my grandmother had asked me for it, and Cory wanted to use the chicken to make her avocado chicken lunches that my grandma can't eat... Aside from the screaming tantrums, scaring my grandmother, dangerously changing her normal food schedule by increasing her Vitamin K, secretly changing her Lasix from 3pm to 8am, leaving my grandma in bed all day in a tshirt and a diaper, letting her lay flat instead of sitting up when she sleeps (her chest collects fluid when laying flat), and only interacting with my grandma to scream at her or take her to the toilet, she expects to eat their food when they are on a fixed income..... When my grandfather brought all of this to the attention of Laurel, the Arden Rose manager, she told my grandfather that she didn't have a replacement CNA for Cory, and Cory demanded that visitors are banned from my Grandma's house or she would quit.......