It is not true that you have so little power. You do not know the extreme power you have in Christ, for it is written:

Luke 10:18-19 says "He (Jesus) replied, "I saw Satan fall like lightning from heaven. I have given you authority to trample on snakes and scorpions and to overcome ALL the power of the enemy; nothing will harm you."

Father God, I render the enemy powerless and harmless over these children and this daughter in the name of Jesus Christ by His authority given me: Nothing shall harm them and in the name of Jesus they shall receive full healing, full recompense in such a way that they know it came from YOU, GOD and no ill effect from this accident and I trust 100% in Your wrath, FATHER GOD to be poured out on Satan for what has been done to these children and daughter for "Revenge is mine saith the LORD."

Father God, I place a hedge of protection by faith in the name of Jesus Christ for these children and their mother and command that they have faith in You and love you and one another as you have commanded, so that You are glorified! amen