Complex sentence: From an early age it had been decided that Louisa should become a doctor, and at 17 she was sent to Royal Holloway, University of London in Egham and obtained her London Matriculation in 1892.
Split into simpler sentences: From an early age it had been decided that little Louisa should become a doctor. When she was 17 she was sent to the Royal Holloway College in Egham and obtained her London Matriculation in 1892.