Hello, Sorry for the delayed response - I don't think I ever saw your post here. I see you have posted on the Rootsweb board, too, more recently, so you may see my new post there - almost a repeat of this one.
I don't have any sibling information for Ellen Kiley. I am 90% certain I found her marriage record in the MA Vital Records, under Killey, as the daughter of Matthew and Mary, noting she was born in County Cork, Ireland, around 1840.
I saw your post about church records for the Kileys in Boston. Would that have covered Malden, too, or no? Malden is in Middlesex County.