I think it really comes down to this.
This is the author's story and he will get as complex as he wants to get.
Yes, there will be secrets and reveals in the story.
However, how complex do we think this is going to get? I personally am trying to put way more complexity into FV/Barty to make things make sense that were probably just a writing issue.
This is so very true, but players (or at least this player), expect complex problems to not have simple solutions.
The reason I was pretty bummed out by the FV part is quite simple: we have a lot of emotional baggage to sift through, 90% of that stuff that happens in act 1 is not properly addressed (e.g. the day after Evan dialogue is addressed in act 2 and it is the only one I think.).
We keep on seeing stuff added and not addressed:
Isaac comes and tries to "steal" Lacey? Not even mentioned once, like it never happened.
Bastion situation where Lacey kissed him (the kiss was the only thing she kept for MC) and was super duper happy? forgotten like it never happened (at least make a tie in with the jealousy fetish Lacey has instead of saying that high and drunk Lacey can cum buckets, which is biologically so wrong that I can't even start explaining).
So there are complex themes, and I respect the author wanting to dive to the depth he wishes, but we need to see at least some of them addressed instead of thrown away because they "run their course" and the shock value has been achieved.
All of this with the caveat that the author can write in what every reality he wants without any description of how it was able to happen, but do you think he would.
Definitely, and I subscribe that therapy is rather private, but for MC and Lacey?
I can't see why she would not be more forthcoming, in my opinion it is just because the author wants to keep some secret or doesn't want to elaborate, but adding a line or two "me and Lacey spoke about her therapy and what she did" could do wonders.
Now, I want to discuss something that has not come up, but is something I have personal experience with and could be a reason she would stop going to therapy. That being sexual addiction.
Many years ago I dated a girl who was a recovering sexual addict. She had worked in happy ending massage parlors. She had a failed marriage that ended because no matter what she did she could not stop cheating. We talked and got together for the better part of a year and she ended it because she said if she were to let it go further should would not be able to keep from hurting me.
Ok enough of that part. However, when we met and she opened up with her life she was just starting her recovery and going to therapy. The most important part of her therapy was abstinence. She could not have any sexual contact until she got to a certain point in her recovery that she could start having a healthy sexual relationship.
It would be hard to believe that any therapist would not hear her story and talk to her about a sex addiction. How would she respond to being told she had to be completely abstinent at a time when her husband is coming out of an abstinent time of his life and starting to learn the joys of intimancy?
So, Lacey is not a sexual addict and never was, her reasons to have sex were several: getting over her trauma, pleasing Mia, make herself feel worthless and IMO in pure DF speculation mode she enjoyed the attention (see: the need to flirt often even immediately after cheating on MC).
We know she wasn't because she gave it up easily (senior year was full abstinence) and is not interested in sex without MC being a part of it.
Sure we can say that Lacey is lying to everyone including herself, but she does not miss the sex or at least that kind of sex, she still likes sex with MC in any form (even with him as a spectator

) but that is the extent of it.
This is obviously based on the info we have right now.
A deeper look might make us think that she actually uses sex with MC as a manipulation tool (see after he accept the work trip for example).
BUT we don't know about her "other side", which I often said I hope it is not sexually related, as it would be a big letdown.
My point against this theory is that she discovered this side while she was in college away from MC, and MC was the only one helping her keeping it at bay.
Obviously Mia, our wonderful friend, has probably no clue.
Considering Mia's past and that she still considers herself a virgin, I don't think there is any reason why even if Lacey's abuse went to the worst steps and Mia knew about it she wouldn't still consider Stephen as Lacey's first.
I subscribe to this way of thinking.
If a rape victim tells me they are a virgin, they are a virgin, period.
With our luck, it will just be completely forgotten and never explored
Stop hurting me.