I am trying to trace Harriet Fletcher. She married George Worgan on the 8th Aug 1864. I believe George died in 1875.I have all the census records up until 1871 and after that nothing. I am thinking that maybe Harriet married again and that is why I can't find her. I have looked at some marriages and there is one is 1876 and I am wondering if this is her.

Name: Harriet Worgan
Year of Registration: 1876
Quarter of Registration: Oct-Nov-Dec
DISTRICT: Monmouth (1837-1939)
COUNTY: Gloucestershire, Herefordshire, Monmouthshire
Volume: 11a
Page: 61

Any help pointers would be great. Thank you.