Been here before is why.
We have a primary source to show her family placement:
Maude names these family members in her will: [attached to her profile]
Sir John Hulle, knight, her late husband
daughter: Elizabeth, a sister at Buckland
son: John, one of the executors
son: Ralph
daugther: Margaret
Thos. Daubenay
"sister Chambernon"
Rob. Hulle, one of the executors, presumably her stepson
Isabella Hull, presumably wife of her stepson
This has to have been http://cybergata.com/roots/8957.htm
• Background Information: From GEN-MEDIEVAL-L Archives. 193
Richard Champernon married, 2ndly to Katherine, apparently the daughter of that Sir Giles Daubeny, who was the 3rd Baron Daubeny, of Kilmersdon, Somersetshire, who died 24 June 1386, and his wife Eleanor Wyllington, herself a Champernoun descendant, though a daughter is named among their children in Lord Hylton's Notes on the History of the Parish of Kilmersdon [Taunton, 1910].
As a side comment.
“Our Royal, Titled, Noble, and Commoner Ancestors & Cousins” is a wonderful resource, but has errors (as well as “conflicts with other interpretations”), so we try to inspect his citations.
I also see from the home page of https://our-royal-titled-noble-and-commoner-ancestors.com/index.htm
“Marlyn Lewis passed away on 22July2021. I will be working on any issues people find, so please forward any questions. … This database is in a maintanence mode only. …”
A more accurate but less comprehensive site, also in maintenance mode, but also giving references, is Leo van der Pas’ genealogics.org
https://www.genealogics.org/getperson.php?personID=I00313248&tree=LEO
[S00119] The Lineage and Ancestry of H.R.H. Prince Charles, Prince of Wales, Edinburgh, 1977, Paget, Gerald. Q 117942
[S01534] The Wallop Family and Their Ancestry 1928 , Watney, Vernon James. 256
To me, naming her sister Chsmpernon cinches the deal.