My 3y 9 mo old grand daughter is not sleeping will. If we give her even 45 min nap she ends up sleeping only asking 8 hours at night (total sleep per 24 hr is 9 hrs) If we stop her nap completely she sleeps 11 hours at night (total sleep is 11 hrs) but she is cranky and fussy since evening until she started to sleep at night. What to do? I want to streamline her Sleep;