Yes bro, it was a way of saying. But I mean if we say that Josy is 18, 19 or 20 years old, Jill should be 25, 26, 27 and she doesn't look like it.
If we want to say that they are both have 18 years old, it means that Lana would have had Josy when she was a minor, and I doubt that has happened
I also ask you if what you say is theory or affirmation, since it would not make sense to discuss something that is confirmed.
This is an example
Let's assume that Jill is 3 years old, Quinn is 2 years old when the MC and Josy are born.
Lana is 18 when she was in the drug hole. She gets out and gets pregnant. Now Lana visits Jill at certain intervals. We know that is written in the game. The intervals of the visit get bigger and bigger and at some point the time comes for the witness protection program.
Start of a timeline (You can also move a timeline)
Lana 19, Jill 3, Quinn 2, Josy birth, MC birth, Lynette's death.
Another visit (One year after Josy and the MC were born)
Lana 20, Jill 4, Quinn 3, Josy 1, MC 1
Another visit (Yes times in between, nice excursion pictures are taken)
Lana 22, Jill 6, Quinn 5, Josy 3, MC 3
So many visits (Last visit before witness protection program, Lana's death is faked).
Lana 25, Jill 9, Quinn 8, Josy 6, MC 6
Bella visits Jill and becomes a friend to Jill. This, of course, is captured in a color photo.
We don't know Jill's birth date, so such shenanigans are possible. We only see what DPC shows us.
Lana will be as small as Josy. Mother and daughter.
I hope this is understandable now. If not, I don't know how to explain it.