She was most likely in her first trimester (she may have only been pregnant for a couple of weeks), so it was probably only a “baby” if your definition of “baby” begins right at conception itself. If your definition of baby doesn’t start til last trimester/ already out of the womb, then nah, she didn’t lose a “baby,” so much as the idea of a baby. What likely happened was she had a very, very heavy period.
Which isn’t to say that people can’t be upset about that happening, eapecially if they’ve already built an emotional investment. It’s an unfortunate thing that happens, and some people take it harder than others.