NEW YORK -- A professional lifetime spent working on behalf of women and  girls is a foundation of Hillary Rodham Clinton's likely presidential campaign, and this week was meant to be a showcase for that part of her resume.

Instead, two days of carefully scripted events highlighting the gaps in women's progress and opportunities have been overshadowed by political questions about Clinton's exclusive use of a private e-mail account when she was secretary of state. Questions about the account, which was not subject to government record-keeping, have become a test of Clinton's political strategy of remaining out of the official 2016 race -- and out of the line of fire -- for as long as possible.

It hasn't worked. Clinton is likely to address questions about the e-mail account this week, according to two people familiar with her unofficial campaign. She has passed up opportunities to discuss the growing controversy at scripted political and philanthropic events over the past week, but pressure -- including from fellow Democrats -- has made that stance untenable, those sources said.

A growing number of Democrats has urged the party's presumed 2016 frontrunner to address the issue. Sen. Dianne Feinstein (D-Calif.) said over the weekend that Clinton should "step up" and talk about the e-mails controversy because the silence was hurting her. On Monday, Sen. Amy Klobuchar (D-Minn.) said on MSNBC that "you’re going to hear something from Secretary Clinton this week, I’m fairly certain it’s going to be soon.”

On Tuesday, Clinton is slated to appear at the United Nations to mark 20 years since one of her most memorable moments in public life. Attending a 1995 United Nations conference on women, then-first lady Clinton declared that "women's rights are human rights." The line became a credo that she and many others have repeated often, and shorthand for a set of arguments Clinton makes about the ways in which women's full participation in society and economies benefit everyone.

In a related appearance  Monday, Clinton and daughter Chelsea Clinton unveiled a long-planned report measuring the global wellbeing of girls and women. "There has never been a better time in history to be born female," Hillary Clinton said, despite obstacles such as education and pay gaps, inadequate healthcare, child marriage, and societal biases against women as CEOs, business owners, landowners and breadwinners.

The "No Ceilings" study was a project of the Clinton Foundation and the Bill and Melinda Gates Foundation to measure women's progress since the 1995 United Nations Conference on Women, which was held in Beijing. "This is the great unfinished business of the 21st century,” Clinton said.

The report charted gains in women's health and education but disappointing data such as the 5 percent of Fortune 500 companies with women CEOs.

"Excited to share the #NoCeilings data," Clinton tweeted Monday. "Hope you will dive in & use it, share it, learn from it, & get motivated."

A day earlier, Clinton temporarily replaced her Twitter profile picture with a blank outline of a woman's head as part of a media campaign to illustrate the ways women are still "not there" by many measures of success.

That Twitter picture is the now-iconic image of then-Secretary Clinton seated aboard a military transport plans and reading something - perhaps e-mail - on her BlackBerry.