the seat on my rolly chair fell through and now Im in a another world?

there once was a highly intelligent idiot named Vanessa. for this story we'll just call her Nessa, yep just Nessa.. ITS BEEN SO LONG SINCE LAST I SEEN MY SON, LOST TO THIS MONSTER, TO THE MAN BEHIND THE SLAUGHTER buh nuhnuh buh nuh nuh.. yup I just did that... anyway, Nessa makes prosthetics for people. in fact she pushed the purely mechanical industry of prosthetics a bit forward after being inspired by Ian Davis, a member of the missing parts club and a machinist who lost all his left hand's fingers but his thumb to blood cancer or maybe it was sickle cell.. I should remember this.. anyway Nessa later loses half her left arm to a dolphin, yup a dolphin and then makes herself a replacement plus she makes it look steampunk.. which is cool. Three years after this, and 7 arms later, she gets a Norwegian forest cat named Leif. 3 months later she gets a Caucasian shepherd named commander. why? not even she knows! anyway after passing out from exhaustion on a rolly chair leif gets on commander's back and just sits there while commander does some zoomies. later after commander stole some cheese, how? I don't know? Leif gets onto a shelf right above Nessa and her chair and, as cats do, knocks off a dumbbell that lands directly on the stools lever thing and because Nessa sleeps straight up, the pole goes straight through her spine ending her life. she then fell over and the pole and herself took Leif and commander with her.