She's probably putting the cart before the horse... light or troubled sleep leads to more dreaming because REM sleep phase comes just before a waking or almost

She's probably putting the cart before the horse... light or troubled sleep leads to more dreaming because REM sleep phase comes just before a waking or almost waking phase. Also, you most vividly remember those dreams that happen just as you are waking up, so the more often you wake the more intense your dreaming seems.