That's the neat thing... you don't.
AFAIK, of all the milfs you bang, both Nora and Eva are the ones you always have a scene with, with no way to avoid (unless you count the bad ending where the MC dies because he didn't tell her about his meeting with the Hermit, or whatever the name of that dude was). If there's a way to not be in any of their paths, I haven't discovered, and even then, I wouldn't choose that option.
And aside from you, I don't think anyone cares that much about the ¨plot¨ that isn't about banging desperate horny wives.