You fucking imbecile. You utterly braindead motherfucker. Your sister's the fucking problem here, the demon literally just told her her delusions were true. That's literally all it did.
christ almighty that's a lotta compressed/hyperspaced muscle
nop, osmium is 22.6 kg/L and the average volume of the adult human body is 65 L - she'd weigh almost a tonne and a half if it was osmium