Flowers Appear!

The two stopped, neither daring to breath nor speak, just standing there with eye wide surprise. Out of nowhere, as if just appearing from thin air came a massive bouquet of flowers in Jacob's hands, he looked mortified and Cassy looked stunned.
"That was incredible," she exclaimed, "I didn't know you could do magic!"
"I can't," he said in disbelief, dropping the flowers to the floor after the initial shock had worn off, "I swear!"
"Then where did they come from?" Cassy asked...but she trailed off, remembering the note that came with the necklace, about how it could grant wishes that affected only one person and how the first name she spoke...was Jacob's. That was amazing, but it couldn't be true, could it?
"I think I can make wishes," Cassy beamed, "The necklace, maybe it's magical...maybe I can..."
"What do you mean?" asked Jacob
"I wish you had blonde hair!" Cassy spoke aloud and watched in utter amazement and with great glee as an unaware Jacob lost his black curls, only to replace them with blonde ones.
"What are you looking at?" he asked in puzzlement but Cassy only squealed with excitement.
"HOLY SHIT," she remarked loudly, "It works, I can...oh wow, this is amazing."
Jacob screamed, noticing his new hair color in the mirror behind the counter, "What the fuck!?"
Cassy smiled, "I can do anything I want to you, I can wish for anything as long as it effects you Jacob!"
"This can't be real," he said, "You're tricking me somehow, how did you do this Cass?"
"I'll prove it," she declared, "I wish..."