Can i take my kids by force from mothers home?

We are married for 11 years and are in the final stages of divorce. My wife had left me 15 months back and all this time she would realise the mistake and will return back. Now she is filing divorce and at the same time, while talking to my daughter, she complained me that her grand parents and mother abusing her physically. I then gone to her house to discuss where they did not allow me to speak to the kids and also seems threatened kids if tries to speak to me. (Because 1st day, my daughter came towards me running and within 2 mins she was called back where i did not get a chance to discuss with her). 2nd day when i visited their house, she then maintained a distance and with fear in her eyes clearely and barely spoke with me. I can understand her situation at such age where she cannot dare to speak unless i meet her personally outside the house which is not possible. BTW, My Daughter age is 10.5 Years and My Son age is 9 Years. So before going to proceed with a divorce, i would like to get my kids by force from their home and take into my custody to safeguard them and then proceed legally towards seperation and custody whatsoever. Also i want to get counselling to my kids immediately after getting their custody forcefully. Can anyone suggest me the way for this as i am no more able to see kids with such a pale face and living under such undesirable conditions.