What clues Percy and his friends have that all is not right with auntie M why do you think they overlook these clues?

Percy and his friends notice that Auntie M seems preoccupied and keeps odd hours. They also find strange objects and hear mysterious noises coming from her room. They may overlook these clues because they trust Auntie M and have known her for a long time, making it hard for them to believe that she could be involved in anything sinister.