Not a bug (I mean there are a lot of bugs, but it sounds like other people have reported those already), but a major continuity issue. So I finally did get that scene in Chapter 1 with Amie, or rather "Officer Sheridan". It was pretty convoluted and seems to involve not only your choices for that night, but going back quite a way before. It was pretty disappointing, really. More of a tell, don't show situation.
So going ahead to Chapter 2, you can invite her out on a date, and then you go back and get her into bed, and all that stuff, and she seems to really like Dee, and they even refer to her as one of her girlfriends. Now fast forward to Chapter 3, and she's back to being called Officer Sheridan, and acts like she doesn't even know Dee anymore. She also says at the retirement party that she's not a lesbian, and it's implied she isn't even that interested in girls at all.
Later on, we see this "Vixen" we've been hearing about all this time, and that's definitely Amie Sheridan. I mean come on, it has to be her. Looks exactly like her, and at the end there, is she at a police shooting range? Sure seems that way. Only now she goes by the name Estella, and doesn't even seem to even recognize Dee at all, and neither does the new police chief know her. I don't know. Maybe you're trying to pull some kind of evil, identical twin thing here, but there's a lot that just doesn't make sense and even conflicts with that past. While you're going back through, might want to try to clean that up a bit.