Very Little New Information

Rosael Rodriguez, age 27, died in January of 1986 after an abortion performed by Angel Acevado Montalvo in the U.S. Virgin Islands.

The only information I had been able to gather on Rosael comes from pro-life web sites and the Social Security Death Records. Priests for Life posts a list of women who have died from legal abortions, including Rosael Rodriguez, who died in January of 1986 at the age of 27, according to Social Security. She had been born on April 2, 1958. Priests for Life cite a March 5, 1992 article in the Virgin Islands Daily News.

Human Life International mentions that abortionist Angel Acevado Montalvo was charged with manslaughter in two cases of maternal deaths from safe, legal abortion.

HLI also notes that after his conviction, Montalvo went right back to business doing abortions.
Priests for Life also cites one other death, that of Diane Adams, from that article. 

I finally found a United Press International snippet, published in the York Dispatch, noting that Montalvo had performed the abortion knowing that Rosael had only believed herself to be pregnant.