I think a writer or producer or somebody behind the show recently answered a fan’s ask about Val’s age as 20-21, which makes a ton of sense.
I don’t know about the rest but did you catch Lucia’s gravestone at the end? 1992-2018? She’s not 26, no way. Eva said she was around her age but she seemed to imply the other side of it. 26 has to be closer to Guille. They can’t be like one or two years apart from Val to Guille to Eva to Lucia. I feel like time isn’t a linear concept in telenovelas, lol. Also, you can’t rely on what the props say.