Although Tippi is no longer a part of your world, you can regain the use of her powers by purchasing a near-perfect duplicate of her. Give Francis a visit in Chapter 3-4 after beating the game to discover that he has created a near-perfect clone of Tippi, named Tiptron. You can purchase it from him for a cool 999 coins. While pricey, Tiptron will allow you to use all the same power's Tippi had!