You can definitely motion for modification if mother's behavior is endangering your child. If you're not comfortable how to do this on your own, I strongly suggest getting the help of a local family law attorney.
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Yes, these factors can contribute to a finding for modification. Modification is two-file (1) substantial change in circumstances not contemplated at the time of final judgment and (2) best interest of the child.
Contact local counsel as soon as possible.
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