Well Grandma fell freaked me out

She was having me put a comforter up on the shelf. I look around to see she fell like a ragdoll. Screames Grandma, dog came. I got her up. Nothing broken. But jeez Grandma. Why'd you fall backwards like a sack of potatoes. Must have thought her walker was there to sit on.but it was 4 ft away...sigh. everything seems fine now tho.