As long as you have the latest version of the game, you can access it by getting the 'CONTROL' achievement. To do that, you have to find the hidden note in Celia's desk- still a bit of a challenge because you won't see it unless you're drunk enough. You'll lose your sanity trying to get drunk enough if you don't have some ginger ale as well.
1.2.8 is the latest one, yep! You can probably find a guide to follow if you look up how to get the Control achievement that will tell you how to do it step by step. You need to drink like 5 times or so, it's only possible when she's gone for a long time. You'll know you have the achievement if there's a little animated Fox taking his hat off on the collections screen. Once you have it, you can just start a new game and there will be a new option to go with him at the auction.