She probably knows but it's important to keep a consistent schedule of
using Tegretol. Skipping doses or stopping abruptly risks causing more
seizures.
 She's likely prescribed a time released version (CR or XR) for
Complex Partial (formerly Temporal Lobe) seizures.
 In case she didn't already know, Grapefruit Juice and alcohol can
interfere with functioning of the Tegretol.
 The Ativan was *probably a sublingual type (if she hadn't used it
before), and is intended to be put under the tongue to be rapidly
picked up into the bloodstream.  It's a relaxant and if anything tended
to make me tired and want to sleep within about an hour of using it.
It did provide rapid control the few times were I got an Aura that I
sometimes got ahead of full onset of a CP Seizure.   (I haven't needed
that since about 2002, but it was extremely effective for me from
1995-9 when my szrs. were not controlled.  )
  I was affected for a while by low pressure zones (rain or snow
approaching) for a period, and was worried about effects of flying
since the cabin is pressurized ahead of take-off.    Stress can make us
more prone to a szr. so if she was worried about flying? that could
have contributed to a CP seizure or even Simple Partials (Auras).  Lack
of sleep or timezone changes could also affect stress levels.
  (In my case after I posted here to ask for any ideas, I was able to
fly from 2000 feet to sea level (Vancouver and Hawaii)  without
noticeable effects.  People who might still be sensitive though could
be affected, or even the enclosed Cabin during the flight could be
irritating to someone sensitive to szrs. )    G./

 Another thing I thought of, if she was flying across many timezones,
e.g. 6 like I did a year ago, it takes some adjustment or clockwatching
to make sure the spacing of the doses stays consistant, as they were at
home.
  In other words, if she was supposted to take those each 12 hours,
the pharmacy or Dr. could havd told her whether she could vary that by
3-4 hours, then take the doses as close to the 'at home time' while
she's away, or slowly move the time to the new zone.
  At the time here (years ago), someone suggested buying a $10 cheap
watch, and leave it on the home time to be used to time dose taking.
Then give it to a child when she got back home.   G./

sounds to me like she really should go back and see a neurologist as 5 pills
a day seems like a lot for someone that doesn't appear to have a severe
seizure problem..
That being said ...any seizure is a problem so the best advice I can give
is tell her to go see her doctor....and ...
when taking any other drug no matter what it is please...please get advice
from a pharmacist that understands the drug that she is taking....
cheers