Hi Dvb
Presumably you've checked out the female wrestler list site?
https://www.wb270.com/eur.htmThe link to the only Yorkshire listed wrestler there is not working, but there are a dozen Manchester based session wrestlers, all seem pretty experienced and likely to be happy to travel or certainly match up for a semi-comp against your wife in the Manchester venue, obviously for a price.
Also don't forget to check out wrestlers' travelling schedules on that site too - I see that an Irish girl 'Sara Lips' is touring and in Leeds near the end of July. (and btw looks absolutelyl stunning!) She clearly would be overmatched in a competitive match vs your wife, but treat her right and you might get her to agree to a 'quarter-competitive' match with your other half. (I would love to see that!). She's the only one I can see visiting a Yorkshire city currently, but you should check every so often.
There are other sites to for session wrestlers, like sessiongirls.com but generally speaking wb270 is the most comprehensive.
Good luck with it all, and keep us all posted if it happens!
Gus