There were two Hannah Sanders who were members of the Wilmington Monthly meeting in the early 19th century.

This memorial is most likely that of Hannah Mendenhall, who was certified to marry Ellis Sanders (1765-1843) at Kennett Monthly Mtg. They had at least 3 children together:

Caleb
Ellis (1795-?)
John Pennock

Source:

Herbert Standing, Delaware Quaker Records: Early Membership Wilmington Meeting

The other Hannah Sanders of Wilmington monthly meeting in this period was born Oct 23 1773 to Israel Corbitt and Mary Humphries, of Duck Creek Monthly Mtg, removed from Duck Creek to Wilmington Mtg in 1801, and was married June 8 1793 to John Sanders with whom she had:

Israel (1794-1846)
Charles (1798-?)
Mary Ann (1801-1833)
Elizabeth Clark (1805-?)
John C. (?-?)
Hannah Corbett (?-?)
Lewis Henry (?-?)

In 1827 Hannah (Corbitt) Sanders and her daughters Mary Ann and Elizabeth Clark Sanders were certified to transfer to the NYC monthly meeting, and NYC monthly meeting records confirm their membership there. In 1832 son Israel was certified to also transfer to the NYC Monthly Mtg. Mary Ann and Israel Sanders both died and were buried in NYC in 1833 and 1846 respectively. According to the Encyclopedia of American Quaker Genealogy Hannah and daughter Elizabeth Clark were dismissed from the (Orthodox) NY Monthly Meeting August 1831, and certified to the (Hicksite) Philadelphia Spruce St Meeting January 1838. But there is no further record of their presence at any Philadelphia Monthly Meeting after that.

Sources:
Herbert Standing, Delaware Quaker Records: Early Membership Wilmington Meeting p 279
Delaware Quaker Records: Duck Creek Monthly Meeting Kent Co. p 20, 121 (names spelled "Saunders" and "Corbitt")
Edward Wright Early Church Records of New Castle County Vol 1 p 146 (name spelled "Saunders")
Quaker Records NY Monthly Mtg Vol 2 1828-1859 p 13
NYC Municipal Archives Death Libers 8 & 15 (Israel and Mary Ann Sanders)
William Wade Hinshaw Encyclopedia of American Quaker Genealogy Vol 3 p 278