Pandava #3: Aru Shah and the Tree of Wishes book by Roshani Chokshi

War between the devas and the demons is imminent, and the Otherworld is on high alert. When intelligence from the human world reveals that the Sleeper is holding a powerful clairvoyant and her sister captive, 14-year-old Aru and her friends launch a search-and-rescue mission. The captives, a pair of twins, turn out to be the newest Pandava sisters, though, according to a prophecy, one sister is not true.
During the celebration of Holi, the heavenly attendants stage a massage PR rebranding campaign to convince everyone that the Pandavas are to be trusted. As much as Aru relishes the attention, she fears that she is destined to bring destruction to her sisters, as the Sleeper has predicted. Aru believes that the only way to prove her reputation is to find the Kalpavriksha, the wish-granting tree that came out of the Ocean of Milk when it was churned. If she can reach it before the Sleeper, perhaps she can turn everything around with one wish.
Careful what you wish for, Aru . . .