https://www.imdb.com/name/nm0514693/
If you look at her IMDB page, she kept pretty busy after that little incident.
It looks like she got five acting roles after 1973. Everything else was some kind of documentary, and mostly ones about Marlon Brando.
Reading the descriptions of the few movies she was in they were the super-woke of their time, like Billy Jack, the New Age Communist wonder movie.
Here is part of her bio from Wiki. I don't know where she would have found the time to be an actress after 1975.
At age 29 her lungs collapsed, and after recovering, she received a degree in health and a minor in Native American medicine, a practice she had used to recover. Studying nutrition, she lived in Stockholm for some time and then traveled around Europe, interested in the food of other cultures. Later, she taught at St. Mary's Hospital in Tucson, Arizona, and worked with the Institute of American Indian Arts in Santa Fe.[2]
In 1979, she co-founded the National American Indian Performing Arts Registry, which later helped several actors join the production of Dances with Wolves.[26] She shared an Emmy Award as an advisor to PBS's Dance in America: Song for Dead Warriors (1984). She also worked on the PBS shows Remember Me Forever and The Americas Before Columbus (both 1992), and she has produced films on Native American health.[2] In 2009, she gave testimony in the documentary Reel Injun about Native Americans in film.[27]
She continued doing activism and became a respected member of California's Native American community.[3] In the 1980s, she led prayer circles for Kateri Tekakwitha, the first Native American Catholic saint.[20] In 1988, she worked with Mother Teresa helping AIDS patients in hospice care, later founding the American Indian AIDS Institute of San Francisco.[3] She campaigned against obesity, alcoholism, and diabetes, and specifically assisted Native Americans with AIDS, including her brother.[28]
The 1973 Oscars were held in late March. She has a grand total of 7 movies in her IMDB profile. Two of which were 1973 releases and were probably already in the can at that point. The other five are bit parts that span from 1974 to 1978. I wouldn't call that "pretty busy." But, that could also be attributed to being a crappy actress, too. Or being a pain in the ass to work with.