Here are some better options:
* Frau: This is the formal German word for "Mrs." or "Ms." You can use it followed by her last name (e.g., "Frau Müller").
* Mademoiselle: This is the French word for "Miss" and is sometimes used in German, especially in more formal settings. However, it's becoming less common.
* Dame: This word means "lady" and is more formal and often used to address a woman of high social standing.
It's always best to ask a German person how they prefer to be addressed. If you're unsure, you can always use "Frau" as a safe and respectful option.