lookingforjake, sorry to hear about your mom's missing dog.
DooiesMom has not come back to the forum since she posted. I checked her profile and it says she works at a medical supply company.
http://www.pets.ca/forum/member.php?u=38417
I don't know how many there are in Calgary but your best option may be to phone them all and see if you can contact her that way.
Good luck.