thank you Kiltaglassan you have the right one.
I contacted the church and they gave me her name. I had found a Mary J leaving castle rock in 1890 for Boston but had not been able to find any thing more. I have tried to find the web site again with out any luck. Although I did see a Mary in find my past at the local library arriving 12 May 1890 Boston. I was unable to go any further with that site.