Here's a breakdown of the possible issues and a corrected version:
Potential issues:
* "Trace" is not a Spanish word. It's likely you meant to use "tres" (three).
* "El cumpleaños" should be used with a definite article (the) because it's likely referring to a specific birthday.
* The sentence lacks a subject. It doesn't specify who "ella" is referring to.
Corrected sentence:
To make the sentence grammatically correct and meaningful, we need a subject and a clearer intention. For example:
* "Ella nació el tres de marzo." (She was born on March 3rd.)
* "Su cumpleaños es el tres de marzo." (Her birthday is on March 3rd.)
Please clarify what you're trying to say, and I can help you write a correct sentence in Spanish.