Lani gives Val a hard time for her part in the "reveal" of her paternity? Huh? Lani was going to abort, because the baby wasn't JJ's, only changed her mind when JJ accidentally found out, and just how long did she think her "secret" would last? This "late arriving" baby would actually be full term, and no insistence on c-section, or drugs to induce labor would be advised at all.
So, what did Val have to do with Lani having sex with Eli? That is what Lani blurted out at the trial. That is not Val's fault, and it would have come out whether Eli knew about the baby or not. And because it would come out, and the baby arrives way later than expected, it all would hit the fan at some point.