How To Treat Dizziness?

Hi,

My mum just called me to say she is experiencing dizziness. She's described it to me as she was sleeping and suddenly heard a 'pop' in her head her vision was blurred and spinning. That lasted for a minute. After laying in bed for an hour she got up to go to the toilet and vomited. She said she had experienced a bad toothache all day. She also getting a bit of headaches too. Do i need to call emergency for this as it is 5am in the morning. Could it be something serious or could she wait til the morning to see a doctor? Thank you