In this "Misc Ads" on Greyhound-Data there is a 19 month old bitch that won`t chase the lure, Free to GH ,
she on the Uk mainland but you could get her taken over the water for about £70
if you just want it for rough coursing should do you,
but I would put an ad on one of the greyhound sites saying you are looking for a pup that is not chasing the lure to use as a hunting companion and you will probably be fitted up in no time with a young bitch rather than an old bitch that has had pups and is not up to much
Hope this helps
Chaz