I haven't finished the first game xD.
And I don't know if it was already completed the game that I'm currently have is in 0.9
There are three parts, despite the name of this thread and its game.
1. Oh Daddy part 1 - 0.9, "completed"
This is the part you have. It leaves off abruptly because the part 2 was very obviously not originally planned.
2. Oh Daddy part 2 - 1.0, "completed"
This is the next part that you need. It is a separate program. I forget if it uses part 1's saves or not, but it doesn't really matter, since it was VERY short. This went to 0.10, maybe to 0.11 (I forget), and then 1.0 with just a single additional scene past the last update. The ending was rushed, sloppy, and basically just existed to ste up the time skip between this and the next part.
3. Sara - Oh Daddy part 2 - 0.2, in progress (this thread)
This is the current part, and it comes after Oh Daddy part 2. Yes, this is its official name, regardless of how confusing that is. This is the "post-time skip" game obviously intended to get more mainstream attention, which is likely doomed since calling it "Oh Daddy part 2" predicates that censors will go look for Oh Daddy part 1 to determine whether to ban this game or not.