Answer:
the little girl is preparing her appearance carefully for church, but the church will be bombed.
Step-by-step explanation:
Based on the scenario being described within the question it can be said that the ironic part of the imagery is that the little girl is preparing her appearance carefully for church, but the church will be bombed. She is making sure that everyone see's her in a certain light, when that is the last thing that will occur do to what is about to happen.