Tilly will only gather Pages by making words that include the letter with the Pages on it. The Pages will only ever hop to a letter that is still needed in a puzzle word - use this knowledge to your advantage!
💡 TIP: Only a single letter will provide Pages in each word you find, but remember bonus words add Pages too.
💡 TIP 2: Upgrading your letters will dramatically increase the amount of Pages you collect with each word.