
Yes it does sound like a fit .
I had a Rough collie who had fits starting at 7yrs he went to the bridge last August at the ripe old age of 15 and half.
If your brother is waiting until tomorrow tell him to keep the dog in a dark room keep her quiet and relaxed no flashing lights they do tend to drink a lot after a fit so make sure she has plenty of water . She will tend to sleep deeply for a good while but this is quite normal .
We would recognise the onset of a fit by ear twitching and staring into space .
They only last a few second but if feels like a lifetime . Remember that the dog will not recognise anyone when she is fitting or after a fit and some can become snappy some dogs have been known to bite thier owner so tell your brother to beware.
I must admit I am surprised the vet didnt want to see him immediately?
Hope everything is OK ..let us know
HTH
Roni