I'm so sorry this is happening. Our family has gone through this and I know how scary and awful it is!
Our (then 21 month old) son had 4 seizures within 4 days a year ago in January. Like your situation, the EEG and MRI results were good. We decided to start the anti-seizure medication after the 4th seizure- a low dose of a drug called Keppra. He was doing well, but then had 3 "break-through" seizures a few months later when he was sick. They increased the dose and he has been seizure-free since. We don't know if/when he will have another and so a certain level of anxiety is always there...but we now have what we call the "new normal".
The new normal involves giving our son his medication every 12 hours and remembering to take his emergency medication with us wherever we go. We also have a video monitor over his crib to watch him during naps and at night. This has been helpful- 2 of his seizures I saw start to happen on the monitor while he was in his crib waking up in the morning. Other than these things, we try to get on with life, have fun and not think about it all of the time. Things like camping and getting on an airplane (basically being out of the range of emergency services) still causes me anxiety though- we have stayed close to home for a year.
Our son is happy, progressing well cognitively, and there have been no ill effects from the medication at this point so I focus on these things. I've done a lot of reading on seizures and epilepsy and have learned that up to 70% of childhood epilepsy resolves itself by the end of childhood. If our son is seizure-free for two years, they we will slowly withdraw the meds. Since this all started, I have talked to MANY people who have said that they had a few seizures when they were kids and then didn't have anymore...and people whose children had seizures and then stopped having them at some point. I really had no idea it was so common. Here's a link to a book I would recommend: http://www.amazon.com/Questions-Answers-About-Childs-Epil...
I'm sorry that this is so long! I hope your daughter never had another seizure. Please don't hesitate to email me privately if want to get contact information and talk. Take care!