Our nearly 10 year old Rainey began having seizures (THEY SUCK) back in 2010, most likely due to a brain tumor (MRI on 10/4/2010 showed nothing, we let her got on 3/8/2011, the day before we were going to do another MRI -- she had been through so much we just decided it was time to set her free ). One thing from the links Lucy put (great website, BTW) is using an ice pack during the seizure. I SWEAR they helped our Rainey.
Rainey had about 35 seizures in total from August of 2010 until she left in March 2011 and every single one of them happened while she was eating (food or treat, didn't matter) or within 60 seconds of eating something, so I would always have the ice pack pulled out of the freezer at the ready whenever she was going to be eating something.
I don't know how old your pup is -- a lot of her actions sounds like what Rainey was doing
sending tons of hugs -- I know how very hard this all is.
ETA: I see she is 7 which means her epilepsy is most likely NOT the "regular" kind but usually is due to some issue in the brain (like Rainey) but sounds like all the stress and things she went through may have just caused it and hopefully it's not something worse. For the peeing, our Rainey had urinary incontinence her whole life and was on DES (NOT Proin! Greyhounds have had very bad reactions to that stuff) and it worked wonders. However, after the seizures started she began peeing and pooping in the house EVERY DAY when we'd go to work -- one time I was only gone 45 minutes and even though she had just been out before I left she did both in that short of time. I think it too was related to whatever was wrong in her sweet little brain.