Complex sentence: Kiki gets a surprise visit from Ursula, who determines that Kiki's crisis is a form of artist's block; if Kiki can find a new purpose, she will be able to reclaim her powers.
Split into simpler sentences: Kiki gets a surprise visit from Ursula, who determines that Kiki's crisis is a form of artist's block. Ursula suggests that if Kiki can find a new purpose, she will be able to reclaim her powers.