@chrisdrama99 was she in season recently? sometimes bitches experience false pregnancy, and the shoe might be a pup-surrogate. it could account for all her behavior, cuz a 'new mom' doesn't want to leave her litter (even if its not real).
@servant7ofthelord flea treatments should never be stacked. stop it.
you could ruffle some diatomaceous earth (DE) through dog's fur to kill the adults.