Standard Daz assets are reused quite often in this game. Look at the Daz characters dancing in your picture. Same characters are in several other scenes in the exact poses.
It's nighttime and they are at a party as pledges of the HOTS.
As been pointed out, Jill first met Josy in the library (in EP4?). Maya first met Jill before the DNG in the library (in EP6?). They
didn't know Jill existed before this.
DPC certainly does not have only 3-4 standard Daz assets. I found so many clothes with different jewelry (bracelets) within 1 minute that DPC can use a different one for each picture. It doesn't matter how many standard Daz assets he has, but how he uses them. If you want I can give you some links where you can download pretty much everything for Daz3D for free. Or do you want to create it yourself. As a program I recommend you then,
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Don't you recognize it? Lily and Ashley have the same status as Josy and Maya. Daughters. However, the choice of clothing is so different? If you do not get any ulterior motives, I do not know what to do?
EP4: Jill and Josy meet in the classroom.
EP4: Jill and Josy are in the library with Bella. The MC comes by and Josy learns that the MC has a date with Jill. Jill asks Josy if they know each other from high school. Josy says no, from the summer job.
EP4: On a date with Jill, the MC laments his misfortune. Jill learns that one of the girls is Josy. Josy told Maya about Jill, so Maya knew about Jill. You can read about it in EP6. Also, look at Maya's facial expressions when she meets Jill.