I have a question about Santiago:
Again with the incest... dont you people get tired of this nonsense?
Santiago is the father of the MC (propably, not even 100% confirmed) but he ist NOT the biological father of Layla or Alexis. Alexis is even older than the MC, didnt you notice that? Santiago didnt have a kid back than before he puts the MC in Emilys belly. Its more than obvious that Layla and Alexis are just adopted by him. Its not that uncommon for a guy to marry a woman who already has kids. Santiago is just the Step-Dad for Layla and Alexis, not by blood... cause otherwise it would be incest again, and there is no incest in the game and never will be... get it in your heads people.
Other than that... You should realise that Santiago... well... is not the "loving" or "caring" type. He doesnt really care much about others only for his business as a sports-agent. He learned that Emily is pregnant with his child... and what was his reaction? Rejection and going to the parents so they pay for a abortion... nice father figure. He isnt really home, and dont pay much attention to his wife or her kids... they have a family dinner at Emilys and guess what, who doesnt even show up?
And you are really suprised that he doesnt pay attention to Layla for her race where she didnt win? And Layla made it somewhat clear too that her "father" well... is not really a "father" to her.
Santiago is a crappy dad, and a overall crappy person, so much is clear. He is the biological father of the MC (propably) but not the biological father of either Alexis or Layla. Adriana had those two already before she married Santiago which is totally obvious during the game, even if its not "outspoken" directly.