> True, but I didn't see that she identified herself, or her gender, in the article. So what's a commenter to do?
Simple.
1. Assume an ostensibly correct pronoun of your own choice (like you did)
2. If someone corrects you, optionally acknowledge the correction and apologize if applicable, then use the correct pronoun henceforth
3. Ignore the overly gender-obsessed people who tell you that you should have used ugly or cumbersome constructs such as "they" or, even worse, "s/he" and variants thereof.
4. Don't worry too much about it; everybody can make an honest mistake.