Sylvia Jefferies

Panettiere's Nashville co-star expressed sorrow that the actress suffered with "inner demons" in a candid tribute.

Jefferies wrote on Instagram: "This hits deep. I've had to take the day to let the idea that Hayden is not with us, wash over me. I shoot straight from the hip.

"At times, Hayden was not easy to be around. I remember calling her a downright tornado. But she was our tornado.

"The sun that appears, the light mist that begins, the rain that gets heavier, the swirling of everything around her, and then the gentle tapering rain returns, along with the calm and sun and light in her eyes, and the giggle in her voice.

"She had an incredibly bright future ahead of her, although her inner demons were at times too much to bear."