Expanding on this...I think it's time to take a closer look at the protagonists' family relationships.
What is considered reasonably certain:
MC = mother is Emily and father is Santiago
Erynn = mother is Melissa, father is not yet known.
Alexis = mother is Adrianna, biological father is not yet known.
Iris = father is John, mother is as yet unknown.
Otherwise NOTHING is secured. We assume things, but does it correspond to reality? Let's just take Layla as an example: We are assuming that Adrianna and Mr. Monroe are the biological parents. But is that actually the case? Nothing is certain about the others, not even their mothers as biological mothers. Even between Erynn and Iris I have a bad suspicion that goes beyond what has already been discussed here.
I'll take the game title at its word: "INTERTWINED". The setting of the story actually begins ~20 years ago. We only know bits and pieces about this.
MC=Mother Emily, father is named Santiago, the father is responsible for his Latino looks and he's suppoused to look a lot like him.
Erynn=Mother Melissa, father a tall, blonde guy with tatoos... there's one strong possibility here(or a sudden asspull just to surprise people).
Alexis= Adrianna is her biological mother, when she has the "use protection" talk with Layla she reminds her that she got preggo with Alexis at 18 years old to reinforce that she should "cover up" with the MC.
No such info on Layla or if the guy who lives at their house is their biological father, but it seems more likely the case.
Iris= Daughter of John(most likely biological), mother never brought up... since he dated her for 2 years already the MC might know things we don't and he doesn't need to ask "where is your mother?" now.
Elena=Mother Ava, father absent.
Val= Mother yet to be named(moves towns often), father not yet mentioned.
Nikki and Cara= We have met both parents and have the full backstory of this family, unbelievable!!!!!
Nyx does love family trouble huh.
That's highly unlikely, one of the options brought up to help Erynn was Alexis dad(who she says has a soft spot for Erynn), they shoot it down because he is famous, but Erynn is receptive to the idea of doing this with him.We've met, kind of, Lexi and Layla's dad. He was in the kitched when their mom was makin dinner, but he left. He may also be the guy was was tryin to rush Erynn when we were talkin to her on the phone that time.
She probably wouldn't be happy hearing the suggestion had he hired her services just a couple of weeks back.