It's possible that:
* The name is misspelled. Perhaps you're thinking of a different actress with a similar name.
* The individual has a different profession. "Mildred Sellers" could be a name associated with other fields, such as writing, production, or music.
* The individual has not yet had public roles. It's possible that "Mildred Sellers" is an aspiring actress who has not yet gained recognition.
To help you find the information you're looking for, please provide more context or details, such as:
* Any other information you know about the individual.
* The specific projects you are interested in.
* The timeframe you are interested in.
With more information, I might be able to assist you in finding the information you need.