Aunt threatening me to call CPS

so a little back story my husband is a bad alcoholic and ending getting pancreatitis and pnemonia and is still in the hospital since the 25th of July. I have an 11(soon to be 12), 8, 19 month and 6 month old. my life and my children's life still go on while my husband is in the hospital. I left my sleeping 19 month old and sleeping 6 month old with my 11 and 8 year olds while I went to visit him for an hour. I also did this while I went to work for an hour and a half. mind you my they have numbers of relatives to call I case of an absolute emergency. am I wrong for doing this? I need money to keep my family running. she is claiming I am choosing my husband over my children by leaving them here alone. I am hotter than a summer night in the desert. my family should help not hurt in my opinion.