How do I get my Pichu to evolve into a Pikachu?

Question

See, I hatched this Pichu from an Egg my female Pikachu laid. I put it in the Pokemon Day Care until it was level 14, then I taught it the move ThunderShock from the Mover Tutor. She's not strong enough to battle the whole battle, but I gave her the Soothe Bell like another person suggested, but nothings happened and I can't find a Thunderstone.

Answer 1

Pichu evolves into Pikachu by friendship, needing a happiness value of 220 before it can evolve into Pikachu.
To find out ways to raise its friendship/happiness, check out this link: http://pokemondb.net/pokebase/331/how-do-make-my-pokemon-happy-so-that-they-will-evolve-quicker