Hi mommy, 9MO's wake time is only between 2.5-3.5h. Her bedtime (being asleep) needs to be at 8-9PM. The reason why she's crying and screaming is because she's terribly overtired. Overtired babies are cranky, can't be put down, and finds it hard to sleep. At this age, she should be soothing herself to sleep after a bedtime routine. If she's not, you may want to get her to do so. She also needs 2-3h of naps in the day. A well rested baby sleeps better at night. Sleep begets sleep!
Read more