So, i plan on running JoY again ,but this time there are two FS in the party.

What are some ideas for hiding Elaiza from the Players. Since the Release of FnD some new wrinkles have been introduced. As we know now just standing next to her FS can sense other FS.

Tell me your ideas...

I just didn't tell them.

The player with Sense didn't think to use it, which would have been the only definitive way for me to reveal her. Maybe a Triumph on Perception check or something, but I downplayed her role in the auction since she's the first to drop out. Beyond a reaction of "Huh, she seems odd. Maybe we'll check her out if we have time" they didn't investigate her. It helps to keep the pressure of the ticking clock on. It kept them focused on the main players which allowed for Elaiza to slip through the cracks exactly as she needed to.

As a side note, I was happy she got to reveal herself because over a year ago we played a prequel session where my young Force sensitive character appeared as a baby being introduced to the Jedi temple on the day of Order 66. I introduced Elaiza as the Jedi who had brought him and then disappeared to fight off the clone troopers. It made for an awesome reveal to my players.

Pretty much the above. Usually the force “ripple” isn’t detectable unless it’s being used, the effect being used is massive, or the individual has a personal connection with that individual and a method to detect them

detecting force users pre-emptively is pretty much the domain of sense and Foresee. If they don’t use either, then they would be largely unaware are they aren’t sensitive toward the tell tale signs. If they have foresee I would totally hint toward this encounter in a very abstract way. A rusted knight stepping out of the shadows, a bright blue blade springing into motion.

I completely agree with the two responses above me.

However, if you need another solution, just give her the shroud talent and call it a day.

Give her the sentinel shadow ability to hide yourself in the force.