Only the water

Lana (thinking): Well, this mission might turn out to be more interesting than originally expected!

Lana: Here, drink this.

Senator: Thank you Lana, you have truly saved my life today!

Lana: That was nothing at all!

Senator: I might already know the answer but I better ask... You don't happen to have any extra pieces of clothes, do you...?

Lana: No, I am afraid no... I can't help you with that, I am sorry!

Senator: Don't be sorry, it wasn't your fault I ended up like this in the middle of the desert... I guess I am going to have to make the return journey as I am right now... Wonderful... I hope nobody will hear of it in the senate!

Lana: Don't worry senator, your secret is safe with me!

Senator: You are my only hope of getting back home alive Lana!

After she has recovered her strength, she hops behind you on the speeder and you take her back to Mos Eisley, naked. When you can see the first buildings, she asks you to do her one last favour.

Senator: Lana, ehm... May I ask you for a favour?

Lana: Yes, what would it be?

Senator: Could you stop behind those rocks and proceed without me?

Lana: What?! I won't leave you here like this!

Senator: No, you misunderstood my intention! I wanted to ask you to go to Mos Eisley without me, buy me something, anything, to wear and get back for me, so I won't have to make the whole journey nude!

Lana: Hm, a reasonable suggestion! Okay, I'll drop you there and I'll be back as soon as I can!

Senator: Thank you so much Lana! You are a fine example of a true Jedi!

You could clearly see the distress in her eyes, as she watches you ride away into the direction of the city, leaving her completely defence and coverless, while laying in the sand behind a rock. After you enter the city, you come up with a few ideas about how to proceed... You could give her that robe you have for free... You could give it to her, in exchange for some credits, to cover its "cost"... Or you could return to her empty handed, stating that they didn't accept republic credits in the city...