H.S.
You might not like my answer, but, you could try to let her cry it out, (she will eventually stop and sleep.) You will have about 3-4 hard nights, but then, the tough part is over. Laying her in her bed asleep is the no no in this situation. At 9 months, she should be laid down drowsy but awake. She will teach herself to fall asleep on her own which is the BEST thing I ever did for my kids.
Another note, if you're not already using a white noise machine, try one. It downs out all noise that she would hear. You outside the bedroom door, parents talking, siblings, and the sleep is deeper and restful! I would buy every mother a noise machine if I had the money! It's a life saver.