Possible Clues:

• Blind mice, perhaps to her, seem unsettling
• Small group of people
• Article about doctor and prophet backing a small group
• See other arrangement constricting male trio
• Heroes met surprisingly small group
• Number, indefinite number, forming triad
• See mother juggling triplets, perhaps?
• Little maids from school possibly see mother coming out
• Trinity Hall, reading electrical engineering, student starts delving into book
• eg Goldilocks’s bears, roof of dwelling concealed by forest