Well first she'll either need that translator/dictionary droid, or she'll need to learn more Basic. Unless, of course, Atreia used the Force to get into Della's mind so the Padawan could understand what she was saying without words.
Lol... This is a unique opportunity for Atreia. Instead of Della being someone who automatically connects the Sith to the Sith Order, she has an opportunity to be taught that there is a difference. She can be taught that Atreia is from the Sith species, not the Sith Order, thus becoming a member of a new generation of tolerant Jedi that don't discriminate against Sith Purebloods.
Cool, so the translation device or protocol droid? Which would you prefer? On a different note however, I find it kind of funny no one's mentioned anything about Yuundas missing finger or eye in our current rp :D
I was thinking about something along the lines of a C3P0-like protocol droid. It's primary functions helping translate other languages and knowing about other species customs and such. She could use it to help learn about more languages and different cultures and stuffs :>