She was great in all of the Star Trek stuff and acted in other things as well.
If you have never seen Gene Roddenberry's show "The Lieutenant", seek it out. She was featured in an episode (but the whole series is great). She did voice work and as she got older, she played a great mother/grandmother in several shows and movies (incl. "Snow Dogs" which all of my kids loved).
I saw that she was a liberal activist and palled around with George Takei a lot. Nonetheless, she was a capable actress and a skilled performer, and I wish comfort and healing come to her family in this time of sadness for them. She truly went where no man had gone before.
Bill Shatner, Walter Koenig, and Takei I think, are the only ones left of the original crew.
De Kelley, Leonard Nimoy, Jimmy Doohan, Majel Barrett-Roddenberry, Grace Lee Whitney, and now Nichelle Nichols all have gone on to their next lives.
May their vision of a world without social barriers be a real thing