@MA2444, this could really be its own thread, parenting challenges. It's the #2 cause of divorce and what my first marriage succumbed to.
Tough thing to admit. How is your relationship with them now? How are they?
I wondered how it'd be if my son survived (SIDS)? Would he have gotten physical with me in disrespect?
The adage is girls are easier when they are younger and harder in the teen years. Boys are more rambunctious and high energy when young but mellow in the teen years.
Regarding the scheming, I raised 4 adolescent girls + menopausal wife at the same time, making the estrogen level toxic. The menopausal wife seemed to advocate for the scheming!
The girls were about the same physical size, constantly borrowing each other's clothes and accessories and constantly fighting about returning them washed and folded. Then there were the constant sleep overs and arguing over who had precedence for taxi services from mom and dad. I do believe having more than 1 girl neutralized many of the would be schemes. LOL