Yes, she deserves to know

Lana: Here, the coordinates to their camp...

Satine: Thank you Lana! You have earned my trust! You have saved the lives of thousands with this single act of yours! Mandalore will be grateful to you!

Lana: Please, if I can have a request... Don't tell anybody the information was from me...

Satine: Of course, I understand your circumstances, your anonymity will be respected.

Lana: How will you proceed with this information...?

Satine I will send a contingent of my troops to clear the camp. I have no other choice...

Lana: If I may ask... could you spare my father...?

Satine: As you know, I am a pacifist... My men will go there under strict orders of attempt to take as many of the members alive as possible... But I cannot guarantee anything... They won't be going down easily, as you can imagine...

Lana: Yes, it will be a tough battle...

Satine: You have made the right thing today Lana! Thank you for it!

You leave the room and return to the ship to think on what you have just done... Was it the right decision? Who knows... What's done is done... Ranvi and Drek went to learn more about your home world, just as instructed, Obi-Wan hasn't returned yet. Later today, you decide to talk a bit further with the duchess. You try to find her in the throne room, but it is empty, so you go for her quarters in the palace. Her guards are nowhere to be found, which is strange given her nature... You find her room, but don't knock on the door. You hear voices coming from inside...

Lana (to herself): Strange, I sense... Obi-Wan inside... What is he doing in there? I better check it out...

You kneel at the keyhole and take a look inside. You see something you definitely didn't expect to see...! You see Obi-Wan and Satine having sex in there!

(Link: https://tse3.mm.bing.net/th?id=OIP.QqxPlVL4hTDRiXuh7CM2fAHaHx&pid=15.1 )

Lana (thinking): By the ****...! What the...! So they weren't just friends after all...! I better tell this to... Wait... No, I better not tell this to anybody... If this gets out, Master Kenobi will be banished from the order for good... I should keep his secret. And I also better get out of here, before I am discovered peeping on them!

You head back to the ship and remain there until everybody returns. Obi-Wan returns with with visible happiness on his face. Little wonder why...

Obi-Wan: So, are you all ready to return to the temple?

Drek: Yes, finally I can get back to my computer!

Lana: How typical!

Once back on Coruscant, you feel a great urge to let the others know of what you have witnessed! But you control yourself and don't tell them anything. At least, not yet...