First of all thanks for the saves, but do you by any chance have something a bit earlier? I may have miscalculated the versions a bit, I don't remember anything involving Mom here.
Well, the first save I gave you (file34) is just the very beginning of mom content. When you get the call from the detective. It was added around v 2.6-2.7.
I can give you the rest of the saves I've got before that and you can figure out which one suits you, based on which quests and achievements are completed.
Please note that files 42-48 are earlier saves than 25-33. It's because when I was playing, I started saving at slot 25 to 48, and when I reached 48, I started overwriting from 25 and so on again