Epilepsy advice please

Hi we've had our bulldog for 3.5 years she's now 4.8 years old she has suffered with epilepsy for 3 years. She has been controlled with 4x 60mg epiphen a day and 1x 245mg libromide a day. Quite high dosage. Up until last week she hadnt had a fit since August 2012 BUT she does suffer from facial twitches. Does anyone else's dog suffer from this?
Last Tuesday she had 13 single fits from 7:15am- 2am weds. (She ranges from clusters to single this time literally single fits) she ended up in out of hours vets when fits were down to 30minytes apart and had introvenus epiphen and diazepam. She definitely isn't reacting to diazepam like she used to. We upped the epiphen to 6 a day for 4 days then down to 5 since Sunday (still with 1 libromide a day). Sunday night she started gurning - her bottom jaw going side to side. Fit about 5 minutes near pill time. This has decreased over the week but she's still occasionally twitching. The thing is she hates the twitches as she paws at her face and yawns or smacks lips together. Does anyone know if this could be side effect to pills or part of epilepsy! Thanks

Facial twitching, lip-smacking, yawning, fly-biting etc are symptoms of a focal or partial seizure, not a side effect of the medication your dog is taking.

Yes, my terrier has the twitching fits between the clusters of grand mal.
It's a horrible ailment and heartbreaking to watch as your dog gets more and more exhausted as the clusters progress.

I have trawled the internet for more info about fits and causes but not one size fits all, does it?

The vets just always go "oh really?! Don't know what that is!" So thank you for support. Now 2 weeks after and touch wood not having any and she's back down to 4 epiphen Nd 1 libromide x