I don't know what to tell you, but it's 100% achievable. I
have the current version, and I was able to get that scene easily. The only way I can see that you
wouldn't be able to get it is either (1) that you didn't start over with the reworked content — old saves won't track variables correctly to allow the scene to happen; or (2) you have done something wrong. That scene
is completely achievable with the current version with Ep1–4 reworked. You must forgive her immediately in Episode 2, and then in Episode 5 you must make
at least 3 choices that add to her dominance (see
this post).