As far from what i have gathered, i haven’t seen Vanille in any of the Final Fantasy XIII-2 screenshots been shared online, so what you’re gonna read after this would be interesting.
Georgia van Cuylenburg, the voice actress behind Vanille, has let slip that she’ll be reprising her role in Final Fantasy XIII-2. During a Twitter conversation with Zelu1984_FFM, she has give an idea to all of us that she will working on the sequel project despite her characters unfortunate crystallization at the end of the first XIII. She’s tight lipped about how she appears exactly but calls it a “very different experience”.
Whether she’s appears through alternate worlds, flashbacks or otherwise is still unclear. You can check out the Twitter conversation below.