My first child had a very good vocabulary (and still does, actually). But not at 1 year old. I remember going to the doctor for her 2 year old check up, and he asked, "Does she have 10 words?" I was floored, because she had around 40 or 50 by then. But apparently 10 at age 2 is the norm. So don't worry.
Watch how your child communicates. My sister's 5th child didn't talk until he was 3 and something. But he had developed an elaborate set of signals with which to communicate, and his older siblings interpreted for him. BTW, when he started talking, he was using sentences, not just words.
I think you'll begin to hear words around 18 mos. But in the meantime, just to ease your mind, start looking at your child and how she communicates. Remember the cries when she was an infant ? Is her communication more mature than that now, and how does she do it ?
Also, at age 1, as long as you are calm when you are around her, and you make her feel loved and protected, then she'll do okay, even through the messy divorce. Try to do fun things with her, and try to reserve your own trauma to take out and deal with after she goes to bed. (tough, I know) Just be as healthy a mom as you can be, and help her to be heatlhy, too !