My Niece Spiked A Fever 3 Hours Ago Of 103

My niece spiked a fever 3 hours ago of 103 my sister put her in a cool bath and gave her Motrin an hour after the fact it's now at 101.8 she was complaining of a headache but now the fevers down she said she's feeling better and doesn't want to go to the Er. She is 8 should she rake her as a precaution