My mom is snoring since five days. Is it related to her seizure episode?

Hello doctor,

I am writing to get a second opinion for my mother. She is 40 years old. She had a seizure the day before yesterday. She had got it for the first time during the gestation of her second child 18 years ago. She is using Tegretol 200 mg but not regularly. She has a history of high bp, but for two weeks, it has been normal (120/80 mmHg). The reports on an MRI scan showed right maxillary and bilateral ethmoid sinusitis. Is this sinusitis related to seizures? During the seizures, she gets froth from the mouth and tongue bites. For the first few seconds of the seizure, she is conscious, but later she is unable to hear, and later on, she is good. Sometimes, she says that she forgot things and cannot sleep properly. For the past five days, she has been snoring during sleep. Does this cause any complications in the brain? Is this dangerous?