Thanks for the advice Pat it was really helpful, I have emailed them both and hopefully something will come back.
Thank you for looking at the records Garstonite. Yes it was definitely a prison, although I do know there was a workhouse there as well. I think that when she was arrested she had her children taken away from her, so hopefully the records might mention this. Also, I believe that they got married in 1876 because that is the year that their first child Rhoda was born. But once again there is no record for the marriage and no record for the birth of the child (that I can find) so it is all just guess work.