Acrylic Nails Being Put On

I caught 2 of them on furniture etc.
Acrylic nails being put on. It lifted up the nail beds is bleeding. Now I will admit the thought of tat long of a nail did cause me to. Acrylic nail clippers and files.
When she was done they were actually almost as long as when I came in today accept for the broken nails. Furthermore when doing tasks that have the potential to damage your nails ie. The nail tech will apply a false nail to the tip of your nail and clip it to the length of your preference.
She started on my nails she filed off the top layer and then glued the tips on. Is Acrylic Nails Good For Bitten. I have googled tried nail clippers and scissors.
Chemicals in the products used to apply artificial nails can irritate the skin around your nails and elsewhere. Acrylic nails in contrast with the other nails have greater strength and durability of the nails. So what I wanted to know is in two weeks time when they need to be infilled the acrylic I would have to obviously soak the Shellac off first which would probably effect the acrylic underneath.
This thins your natural nails making them weaker. That way when. This allows you to see how your acrylic nails are going to look and youll want to go ahead and paint over any mistakes before you put them on.
Would it be possible to do the acrylics and finish with a UV gel top coat and then apply Shellac over the top. Can anyone suggest what may be happening and what I can do to stop this from reoccouring. My acrylic nails that my niece put on for me I have had on for 2 weeks.