Complex sentence: As a third and final attempt to rid herself of Snow White, the Queen secretly consults the darkest magic and makes a poisoned apple, and in the disguise of a farmer's wife, she offers it to Snow White.
Split into simpler sentences: As a third and final attempt to rid herself of Snow White, the Queen secretly consults the darkest magic and makes a poisoned apple. Disguise as a farmer's wife, she offers it to Snow White.