What indicates the woman's experience of finding an article?

The phrase "come across" is commonly used to indicate the experience of unexpectedly finding or encountering something, especially an article, object, or piece of information. This idiomatic expression conveys a sense of discovery that is often unplanned, which aligns perfectly with the concept of finding something during a search or in a particular context.

In contrast, "came up" typically relates to issues or topics arising in conversation or events, rather than the act of finding something. "Come forward" usually implies that someone is stepping forward to present information or take responsibility, and it does not pertain to the experience of finding an article. Similarly, "came together" more often refers to situations where people or things unite or collaborate, rather than the act of discovering an article. Thus, "come across" is the most appropriate choice for expressing the experience of finding an article.