Simple Febrile Seizure! In body temp?

My daughter started getting febrile seizure from 13 months (post dengue). Now she has got 3 episodes in last 6 months time. She recovers with in 4 mins . All the three episodes her temperature has sudden rise from 99 to 104.2 in span of half an hour. We have suggested to give Frisium 5mg x 3 days from 1st episode. During her last episode she got fits even after taking frisium. Doctor has advised to take EEG for abnormality check. Most of Doctor suggest says it will get control substantially post age 4. Should I go for EEG test and trouble her or leave her free? As I see fits act as symptom for sudden change in body temperature. The root cause for seizure is fever. Should we control the seizure or control the sudden raise in body temp? Need your valuable input. Thanks