In 1404 in Essex, she took part in a conspiracy against King Henry IV and was sent to the Tower of London; however, she was eventually pardoned through the efforts of Queen Joanna.
Maud was their only child and heiress, although she had a uterine half-sister, Elizabeth de Burgh, who was the suo jure Countess of Ulster.
Maud was provided-for in terms of dower, enfeoffments and jointure;[6] from 1371, she held nearly half the de Vere ancestral estates and she received an annual income of £662.
[2] Despite her anger at her son's treatment of his wife, Maud nevertheless visited him in Brabant following his forced exile by the Lords Appellant and Parliament in 1388,[5] where she brought him gifts.
She received a pardon on 10 May 1391 for "having crossed the sea without licence to Brabant to confer with her son Robert de Vere, late earl of Oxford, and for relieving him with certain gifts".
[11] Maud remained in high favour with King Richard after her son's exile, having received on 16 November 1389 a grant of the farm of all the lands "lately her husband's" for twenty years.