Julia Healy was Tagdhg's grandmother and sister to my great grandmother Bridget & Maura's great grandmother Helen. I do not know if her middle name was Marie will have to ask Tagdh.
There is another sister to Bridget, Julia, Helen & John, a Catherine Healy, who moved to Worcester, MA also, and married a Roger O'Donoghue in 1917. There may be a tie in there but I have no information on Roger.
E-mail me here and I can send you what I have on Bridget & her firstname.lastname@example.org