I think she was mixed up with her daughter in law, Dorothy Doddridge
https://en.wikipedia.org/wiki/Amyas_Bampfylde
By his wife he had six sons and four daughters as follows:
The notes in the profile for Joan, wife of Richard Doddridge, merchant, of Barnstaple are:
Joan Bam(p)field married Bancock but when widowed married Dodderidge/Doddridge.
But so far, I don’t see a name for Richard’s wife:
From https://en.wikipedia.org/wiki/John_Doddridge
… Richard Doddridge, merchant, of Barnstaple. The family took its name from the manor of Dodderidge in the parish of Sandford, near Crediton, Devon. Richard was the son of a wool merchant and was born in South Molton, in which town he married. With his wife and eight children before 1582 he moved to Holland Street, Barnstaple and served as Mayor of Barnstaple in 1589.[25] A certain John Dodderidge, perhaps a relation, is recorded earlier in 1579 as mayor of Barnstaple.[26] In 1585 he bought a house in Cross Street from his fellow burgess Thomas Skinner, which descended in turn to his sons Sir John and to the latter's brother Pentecost Dodderidge (d. circa 1650), MP for Barnstaple in 1621, 1624 and 1625 and mayor of Barnstaple in 1611, 1627 and 1637]
Dorothy Bampfield had a sister Jane / Joan, so perhaps that led to the confusion.
Here she is:
From Dodderidge, Rev. Sidney E., “Pedigree of Dudderigge alias Dodderidge, of Dotheridge, South Molton, and Barnstaple, Co. Devon, Devon & Cornwall.” Notes & Queries, vol. 3, no. 5, (1905). Page 166-167. < Archive.Org >
Richard Dodderidge, of South Molton and Holland Street, Barnstaple. According to Prince, he married Joan Badcock, of South Molton, but the pedigree at the Heralds' College names as his wife Joan Harder, of Devonshire. Possibly he was twice married.
He had issue
In 1589 he was Mayor of Barnstaple, and dying in January, 1619, was buried at Barnstaple.
It's not really uncommon for two wives of same person to have same first name, but still I would prefer having confirmation from church records or something official. I've tried to search church records for family name "Dudderigge" or "Dodderidge", but so far I have only found mentions from recent centuries (mostly 1900-1999).