In Curse Of Strahd, The Pack visited the Vistani camp at Arrigal's request, intent on giving her a late birthday gift from Blinsky Toys. They found Luvash whipping Alexei, and learned of Arabelle's capture; as the only ones allowed to enter Vallaki, the Pack went to look for her, using Ghalwin Forrester's premonitions granted to him by Yrrga. They rescued her from a Gigant Tayatshkala alongside Muriel Vinshaw, and Bluto was killed during the tense rescue. Arabelle remained strong during it, and developed an affinity for the adventurers, particularly Ghalwin.
A young Vistana blessed with strong powers of divination, Arabelle was the daughter of the Captain of the Vistani Camp, Luvash. She had a close relationship with her uncle Arrigal, who treated her more gently than her father, but both men sawher potential power. Few Vistani had the power to divine the future from a Tarokka Deck, but Arabelle was able to perform minor divinations; her abilities were still unpolished, however. In addition to this magic, she also possessed a razor-sharp sass that belied her young age.
As one of Luvash or Arrigal had to stay at the camp while the other often traveled the mists, Arabelle was taught skills from many different Vistani growing up, often staying away from the camp for days at a time. In one of these instances, she went with Alexei to learn how to fish at Lake Zarovich in the early morning. No fish were biting, and her mentor got extremely drunk out of boredom, eventually passing out and leaving Arabelle unsupervised. She was kidnapped by Bluto Krogarov, who took her to his fishing shack by the lake and kept her in a burlap sack, planning on using her as bait in the evening.