Sometimes kids wake up for no apparent reason and need a lot of help going back to sleep. Sometimes even older kids wake up and decide they need a hug, or to lie on your lap, or to have their back rubbed, or all three at once. Sometimes you end up awake all night, just taking care of your kids.
Maybe you had planned to spend the first odd night of the last ten nights of Ramadan in prayer, but Allah had other plans. Maybe He wanted to reward you twice: once for your intention to spend the night in prayer, and once again for your action of lovingly and patiently nurturing your children.