Dementia and nutrition

Hi, my mother has vascular dementia and we’re running into some real difficulties getting her to eat. She is still living independently but recently suffered a TIA and a broken ankle so she has home care for several hours a day. She has always been one to cook and eat big family dinners but in recent months it’s as though she thinks food is the enemy. My siblings and I have filled her freezer and cupboards with nutritious food and meals that we know she loves, but she is refusing to eat anything other than chocolate and bread. Her home care workers can’t convince her to eat. She looks like she is starving to death, and we’re worried that when she gets her cast off her foot and is able to get around on her own again she won’t have the strength to prevent another fall. She seems to be convinced that if she doesn’t eat anything she will attract male suitors with her svelte figure. She has always been somewhat vain but never like this - it’s gotten out of hand in recent months. So I’m wondering if anyone might have useful techniques for convincing her to eat nourishing food. We’re afraid of what’s going to transpire if she doesn’t put some weight on her very skeletal figure soon.