How does a family get help (in Detroit, MI) for an elderly relative who needs, but does not want the help?

My aunt, 86, lives alone & has been diagnosed with Alzheimers. She's suppose to take Aricept. If you talked to her, you would not be aware that she had any deficits. However, she doesn't take her medicines regularly; misses paying bills; burns up pots & utensil handles on her electric stove; LOSES things but doesn't accept this fact. Her once neat, clean home now has stuff all over the place--including her bed. She doesn't recognize some stuff she's had for years as being hers (thought someone had stolen her purse and put her stuff in a strange purse); can't tell that food is spoiled (we don't know if eats the spoiled food). She doesn't want anyone trying to "get into her business"--family can only help by taking her shopping etc. The Det. Agency on Aging can't help if she's unwilling. She needs someone to come in a few times a week & help with the house, bills etc. but doesn't want this. Her 2 grown children live out of state & want help. Any ideas? Thank you.