It looks like your daughter has Iron Deficiency Anemia
. Dark circles/paleness/anorexia/aggression/tiredness/lack of sleep/lethargy
all are clinical symptoms of it. Is her height & weight normal for her age?
Please take her to a pediatrician
& get a thorough check-up. They will give all the necessary medication & instructions. They may also DE-WORM her.
At home a high calorie diet rich in proteins
is recommended. Greens,legumes,fruits & vegetables,milk should be given in plenty. If you are meat eaters then lean meat & boiled eggs should be included. Plenty of fluids- at least 2.5 ltrs per day is recommended.
After all the above changes will see a difference in her. Agreed that the new baby demands all your time & energy but having some exclusive mother-daughter time with your 1st born will work wonders!!
Thanks & take care