How wonderful to hear from you. I have been delving into the Goodman family history over the holidays. Initially I was very excited to find that Stephen Arthur Goodman was a major-general in the British army and had served with Wellington. I later discovered that he was involved in the slave suppression in British Guiana in 1823. If you Google his name, you can find many references to this. There is a site for the Annual Register 1845 that gives his obituary which gives a great deal of biographical information.
Goodman and his wife Catherine married in 1806 and had 14 children, six daughters and five sons.
I have little information about the girls-some birth, marriage and death dates. I did find Madelena, Frances and Charlotte in the 1861 British census, living in Liverpool. I also found an obituary for Charlotte-she died in 1862.
So if you have specific questions, I will offer what I have.
What was the name of the convent school? I'm not surprised the girls went to school there. York and Leeds were major military bases. In doing research on another branch of my English family, I found that my maternal great grandmother's family lived in both cities-they were also a military family.
Well I hope I can be of help to you, and I'm very interested in your master's research.