Hi Trish18: Butler County, Pa. has a page on the USGENWEB Pennsylvania website. To go directly to the Butler County Page, click here:
http://www.rootsweb.ancestry.com/~pabutler/. On that page is a link to the Butler County Public Library's online obituary index.
To go directly to the Butler County Public Library online obituary index, go to
http://www.butlerlibrary.info/genealogy.aspx. The link to the index is down the page a bit on the left.
Searching the Index, I found
Margaret Mary Sheedy, died 24 Oct 1946
Daniel J. Sheedy, died 18 Aug 1944.
possible relative? John Sheedy died 16 Apr 1912
Daniel's entry mentions Locust St. Butler has East Locust and West Locust divided by Main Street.
All three died in Butler and their obits appeared in the Butler Citizen newspaper. If you click on each name, you'll get a pop up with all of this specific info.
The Butler Genweb page also has a naturalization index. I did not see Margaret Carroll or Margaret Sheedy on it, but you can click on the link on the Butler County page and search the index again.
A person could naturalize in any state court or U.S. court in any jurisdiction. Thus, Margaret could have been naturalized in a court in Pittsburgh, which is the county seat of Allegheny County and is only 20 miles or so south of Butler. My great grandfather lived 50 miles south of Pittsburgh, but he was naturalized there in a U.S. Federal court.
Finally, this may not be your Margaret Carrol. But the 1880 census has a Margaret Carroll, 16, born Ireland in 1864 living in Fall River, Massachusetts with her mother, also Margaret Carroll.
Regards,
John