Thanks very much for getting in touch. Do you have any further details? Interestingly her son Hugh left Londonderry on 13 April 1929 for New York....his final destination was listed as a cousin Patrick Kelly, 109 East Horther St., Mount Airy, Philadelphia. I believe that Hugh would have made contact/wanted to make contact with his mother, if she were still alive, while he was in the USA. Sadly Hugh was killed, according to family history, in a train accident on his way home in the early 30s.
All the best.
Frank