You wrote, "She has a site on Ancestry." Do you mean that she has her information under Public Member Trees there? I cannot find any tree at ancestry.com with what you listed for Thomas Dollard:
2 Thomas Dollardb: Bet. 1832 - 1833 in Irelandof Jersey City, Hudson Cty, NJ in June 1870 ...........+Mary Unknown b: Bet. 1833 - 1834 in Ireland
I find several trees that have information about the other Dollards you mentioned, but Thomas is not included in those trees. Could you please post the URL for this entry at ancestry about Thomas Dollard of Jersey City so I may take a look at it and perhaps contact the person who posted it?