Leitrim-Roscommon

I was wondering if anyone has any Information on a "Jane Conboy". She was known to have been in Lisdadnan, Mohill on the 19th June 1918 at the birth of my late Mother "Frances Theresa Conboy".
On my late Mothers birth certificate it mentions "Jane Conboy" as being "Sister, present at the birth, and resident at Lisdadnan, Mohill.

Long ago my late Mother mentioned that she had 6 brothers and sisters who Died at a young age, could "Jane" have been one of these siblings? I have come across the Names of 2 others who I have no information on.... Their names are "John and Mary" Does anyone know what happened to them.

I am guessing that "Jane.... John and Mary" would have been born between 1901 and 1914 as my late Grandfather was away during part WW1.

HI MICHAEL I WAS LOOKING THROUGH A BOOK I PICKED UP IN MOHILL THE OTHER YEAR AND IN IT IS A PHOTO OF A SISTER (NUN)JANE CONBOY .I ALSO CAN FIND NOTHING ABOUT THIS LADY BUT IF IT SAYS SISTER IT COULD BE GRANDFATHERS SISTER ,NOT YOUR MUMS SEE YA KIT