I have joint legal custody of my teo children ages 12 and 10. Their father is the primary custodial parent (long story short judge didn't like my unconventional hours that I work as a paramedic). I have problems with the step mother who is in the picture. She signs legal documents concerning the children such as school registration forms and medical consent forms. I have tried to explain to them that she cannot give consent. Am I right or do step parents have legal rights over the biological parent?