She had taken cared of the all the processing of papers.
She took care of the children.
She had taken care of all the processing of papers.
The word "care" is not part of the verb. Therefore, it should not be conjugated.
Yes, it's a common mistake, I must agree.
Many years ago, when my English was much worse than now (he he he), in the minutes I took during a meeting, I clearly remember I wrote "task to be taken care of" and the president of the company sent back to me the minutes with his correction "task to be taken cared of". I corrected again and he corrected me. So, I left the way he wanted, he was my boss!
"Great thoughts come from the heart!" Luc de Clapier
you're not the only one gAn in this situation.... it seems so many bosses are in this predicament... sad but it's the reality we are in now. Our other friend Ditas complains about correcting the grammars and spellings of the letters of her boss which adds up to her piles of work being VP of 6 companies under her said boss.... :( (correction: not only of her boss but of those other officials in the company...)
It is tough to learn the hard way that external circumstances are the cause of problems within. If you focus and take action to move closer to win whatever it is you are trying to win then you are being successful.