since my 9 month old was born
Attachments are only available to registered users.
Pay close attention to your daughter's diet and the possible stressors in her life that may be causing her aggressive behavior. For now because she is so young, continue with the timeouts immediately after the aggressive behavior. Also, start eliminating some of her favorite toys when the behavior happens especially at home. Praise her more when she acts in the appropriate manner and provide less focus on the negative behavior. Give her time. This may take a while but it is a stage that many children her age experience.