Abandoning one of the children at her friends house, whom they don't know without contact numbers or a means of contacting their family when they wish to leave.
This is an unclear description, but I have to remark that there was once an era before cell phones and we all survived without 24/7 access to calling our parents. Presumably they weren't abused while at the friend's house and they were picked up, just not "when they wished"?
daily throwing their shoes out the door into the yard. One child reported their shoes outside in the dog feces covered in bugs
For no reason? For some reason? Because the kids were tracking mud inside? Yes, maggots are gross, my 6 year old stepped in dog feces and tracked them into the house this summer.
during a phone call snuck in while dad and his new wife were not home and they were home alone.
A lot of innuendo packed into one phrase. I'm surprised dad doesn't take the phone with him when he goes out. Do you think that 11-12 year olds shouldn't be at home alone?
weekly and daily grounding the children and correcting them when it's the parents job - dad or mom to discipline and legally she has no rights to have custody or discipline or legal invovlement with school, medical, dental, etc.
You are correct that a step parent has no legal authority beyond that of a baby sitter, but in practice there are many step parents fully involved and integrated into their step children's lives. It's not illegal for the step to be involved in discipline or correction, just as it is not illegal for a school teacher to discipline or correct. Is she beating them? I'm sure you would have mentioned it if she was. As to school, medical, dental etc, it is not
illegal for the step parent to be involved, as long as she has the father's consent she can take them to the dentist, doctor, school, make appointments etc. Tens of thousands of families with steps operate this way and the children would suffer if they didn't.
Dad's choosing of the new wife regardless of the children's feelings or wishes being reported. They feel 2nd rate and worthless to dad.
Dad does not need the children's consent to choose a new wife, nor does he need yours. It sounds like he didn't handle it perfectly, but how many of us do? It's extremely common for children to resent the new relationship, that is human nature and not unique to your ex.
Degrading the youngest as to how "fat" she is.
I'm not going to defend this, I wasn't there and I doubt you were either. Most would feel degraded at even a mention of weight due to health concerns; how bad it was I don't know.
13 year old left with her sister for extended time alone and always in charge of her sister in favor of their parties and outings.
This does not consitute any form of abuse. 13 year olds are legally able to babysit and many many families rely on siblings to care for their youngest. It's a pain in the ass for the teen, so is cleaning her room and putting away her laundry.
new spouse taking children out of province
Nothing illegal about this as long as the father consents.
new spouse attending school and excurricular activities, taking responsibilities
Nothing wrong with this as long the father consents. Technically the school should require his signature on consent forms, not hers, but he is backing her up. Your issue here would be with the school board policy, but again, many families have step parents who are fully involved with their children.
children voice their dislike and disinclination to spend time with her on a regular basis. "the crazy lady" "evil step" etc.
This is sad, and I'm not being sarcastic, but it is not abuse. Kid's that age are full of hyperbole like that, you should hear my 13 year old talk about her evil, crazy gym teacher.
these are just a few of the concerns.
She is unfit as is he but that's a different matter all together. I just need to know how to file the paperwork to bring it to the courts and OCL.
You have that backwards. You don't have a case to take the OCL just because they don't like her, didn't approve of the wedding etc. The matter
should be if she is unfit and you have factual evidence of this.
I'm not saying all this to be hard on you, you need to have a better presentation of relevent facts to make your case on. All you are saying is that you don't like her, they don't like her, she is jumping in and acting like a mother. This won't get you an OCL investigation.