She is a descendant of William Edward Hewitt and Florence Nightingale Slack thru their daughter Theresa Hewitt!
To show the randomness of DNA: she matches my grandfathers full sister in 2 segments for a total of 31 cM, 23andMe predicted 3rd to 5th cousin. She matches my grandfather in 5 segments, total 86 cM. 1.15%. 23andMe predicted 2nd to 4th cousin.
She is actually 1st cousin 3 times removed to both of them.
She is the 3rd cousin once removed to me, and my maternal half siblings Brandon, Tiffany and Sandra.
She matches me in 3 segments for a total of 57 cM. 23andMe predicted 3rd to 4th cousin.
She matches Brandon 2 segments for a total of 29 cM, 23andMe predicted 3rd to 5th cousin.
She matches Tiffany 2 segments for a total of 45 cM, 23andMe predicted 3rd to 5th.
She matches Sandra in only 1 segment for 9 cM, 23andMe predicted 3rd to distant cousin!
If you haven't tested yet read my post Why take an autosomal DNA test for genealogy? and get in on the fun!
If you have tested, remember to fully research all the descendants of your ancestors to easier find your paper trails to your matches.