Excuse me?

A girl sleeping in her bed heard a noise, she ignore it and try to sleep again. almost asleep the girl heard the noise again, but this time it was the voice of an old woman saying "Excuse me?", the girl scared didn't wanted to turned around so she kept ignoring it. Again the woman said  "Excuse me?", the young girl couldn't take it any more so she took her Ipod and went back to sleep.