Teenager charged with manslaughter 1835

Hi. Sadly, I have discovered that one of my ancestors was charged with manslaughter when he was aged 13. He, and the two other boys charged with him, were acquitted. Their case was heard at Newcastle/Northumberland Assizes and I have been troubled with the thought that they may have been imprisoned awaiting trial. Forgive my ignorance, but would this have been the case? The case wasn't heard for five months after the girl died in an accident. I have found newspaper reports for the inquest and the trial, which was thrown out of court. I can't find records for imprisonment, however.
It has been one of those days when I wished I had never started researching! The boy and his family must have been through so much. I also feel dreadful for the girl who died and her family.
Many thanks for any helpful pointers.
It has been one of those days when I wished I had never started researching! The boy and his family must have been through so much. I also feel dreadful for the girl who died and her family.
Many thanks for any helpful pointers.