Has anyone else dealt with a slowly dying elderly parakeet?

She is 14 years old and appeared to have had a stroke about 10 days ago. Her right wing and foot no longer work. She stays on a towel at the bottom of her cage, crackling when she breathes and flopping around to get food and water nearby. It's heartbreaking, but she doesn't appear ready to let go. Just wondered if anyone out there has been through such an experience, and what they did to help their little pet?