You look like you could use a bit of a hand.
From the 1888 marriages in Plymouth, Robert Foster married Selina Lock. In 1891, she is mistranscribed at Anc'y as "Selma"; he is 24 (born Devon) and she is 23 (born Middlesex) and they have a 1-yr-old son, so they fit that couple perfectly.
So that Elizabeth Jewell married Edwin Jones. I'm not finding them in 1891 ...
For the 1887 marriages in Stoke Damerel, there are only two couples: Eliza Standing has been mistranscribed somehow (vol or page number), because she actually married in East Stonehouse.
Minnie B Clarke married James E Quirk in Devonport in 1915.
So I suspect that William Clarke married Minnie Blanche Palmer in 1887, and she was widowed.
Nope, amazingly, that's wrong: Minnie Blanche Quirk died in 1987, but she was born in 1893.
Well, I'll bet she was the daughter of William Clarke and Minnie Blanche Palmer! Born 1893, Stoke Damerel.
Minnie B Clarke, born abt 1868, died in Plympton in 1953. I just can't find them in censuses.
... In 1901, Minnie Clarke, aged 32, married but husband not present, in Devonport; daughter is Maggie, but I suspect that's them. (Yes, all perfectly confirmed by later census.)
Which would mean that the 1887 marriage was Elizabeth Jewell and James Burns.
In 1901 there are an Elizabeth and James Burns in Devonport, both aged 45 - no match for your EAJ. Can't find them in 1891, but there is only that one marriage of a James Burns + Elizabeth that fits (barring mistranscriptions at FreeBMD). There are two possible births that could fit: Elizabeth Charity Jewell, 1856 Stoke Damerel, and Elizabeth Hannah Jewell, 1857 Plymouth. The first is an unusual name and the only other record for it is a marriage in Brentford in 1904. For the second, there is a possible Elizabeth Hannah J Jewell marriage in Kensington in 1882 but that seems unlikely. Or, of course, and perhaps more likely, Elizabeth Jewell born c1856 could have been a widow if she married in 1887, with Jewell her first married name.
That seems to leave the Edwin Jones + Elizabeth Jewell couple as the only possible. It would be nice if they could be found!
A problem with that couple is that the 1881 census shows an Elizabeth Jewell in Plymouth, born 1867, daughter of William and Mary, and my money would be on her being the one who married Edwin Jones. Not to mention that, amazingly, there is another orphaned Elizabeth Jewell, also born 1867, in Plymouth in 1881!
So all in all, this hand hasn't offered much help, I'm afraid.
I wonder whether she was a child emigrant, or otherwise emigrated? I checked the Home Children database for Canada, but no record there ...
edit - I think I've found Elizabeth Jewell who married Edwin Jones, in 1891. The "Edwin"s are coincidental!
In Charles, Devon, all born in Plymouth:
Edwin Jewell, head, widower, 43, occupation smith
Elizabeth Jones, daughter, married, 24
Edwin Jewell, son, 21
and other younger children of Edwin Jewell Sr.
The names Edward/Edwin/Edmund were largely interchangeable (I've seen people go by all three in various records, and my grfather Edmund born c1900 believed most of his life that his name was Edward). There was a constant stream of Ed Joneses in and out of the Plymouth area on vessels. But I might think that the Ed in question was Edward Jones, aged 14 in 1881, engineer's servant, living in Plymouth with mother Elizabeth not far from where that Elizabeth Jewell was living with parents Edwin and Sarah.
Anyway, that seems to have ruled out all the possible marriages for your EAJ in those two years, I think, unfortunately.
PS - I've also ruled out the Elizabeth Ann Jewell who married Tom Roberts in Cardiff dist in 1885.
(A move to Wales was not unusual, but subsequent censuses show her born c1865 in Somerset.)
What about the Elizabeth Jewell + Richard Symons marriage, 1892 Plymouth?
(Thomas Turner Wall married Emily Ann Wingfield.)
Blamed if I can find that couple in subsequent records, either ... but I would suspect that in 1891 he was Richard Symons, born c1870 Plymouth, in Charles, labourer.
There are not a lot of Elizabeth Jewells available in Devon to match that marriage.
The chronology of births and marriages for that name seems to go:
Elizabeth Harriet Jewell 1867 Newton Abbot married in 1895 in Newton Abbot.
Elizabeth Jewell 1875 Barnstaple married 1899 in Barnstaple.
Elizabeth Ann Jewell 1872 Bideford marrried 1903 Bideford.
Elizabeth Ann Jewell 1875 Bideford, maybe ...
... or Elizabeth Jewell 1874 Torrington.
Ruled out another one - rats! I saw the birthplace Duloe and blinked ... but that was the
other orphaned Elizabeth Jewell in 1881. In 1891 she is Elizabeth Jewels in St Cleer, Cornwall, "housekeeper" to James Mitch, with son John Jewels Mitch, born in Duloe.
One last attempt, to find EAJ by her place of birth: Ford, Devon. I was interested by Eliza Hatch, the right age, wife w/o husband present and then widowed charwoman, but she turned out to be Eliza Jane Kitt who married Richard Hatch in 1898 (Eliza J Kitt in 1871, born c1868, Ford). There's just no match for Elizabeth by date and place of birth after 1881. I strongly suspect emigration.