Think mum had a baby in the 50s. How to find out.

Hi All we have always suspected something happened to my mum in her late teens. She is from Limerick and was the only one of her family sent to a boarding school in Clonmel and was only there for a year and then she was packed off to Dublin. None of the rest of her family were. She is now 81. Over the years for various reasons and because of things she said we came to the conclusion she had a child perhaps. She never wanted any of us to see her family alone We always felt she had a secret because of events that happened and things she let slip. We did ask her but she would get quite cranky and change the subject. Now she has developed dementia and it happened very very quickly. She is saying that she did very very bad things and we managed to get it out of her that something bad happened in a Clonmel Convent but not what. She now keeps saying she wants to get money (shes in hospital pending nursing home) to give to someone but she wont say who She gives money to this person Christmas she says and they will be abandoned now she says. .When probed she says she cant remember and wont tell us who and gets cranky. We did notice when she talks about this person its always female and I got the name June from her but can get no more. Is there anyway I can get records from any convent in Clonmel. Was there a Convent there that took in Pregnant girls in the early 50s. I wouldn't know where to start.