care giving help

My wife is semi paralyzed due to a stroke. She is unable to to help herself get up or down from bed or chairs, cannot dress or feed herself and has some trouble talking loudly enough for me to hear.  She needs help to shower and use the toilet.But, thankfully, she is generally healthy and in surprisingly good spirits. For the first 8 or so years after her stroke, I was able to do most of the care giving, but did have a female helper from 9 AM - 3 PM. Now. I am physically not strong enough to assist her  safely (I´m 90). Fortunately, we now live in Mexico where household help is relatively affordable. I now have  female helpers every day--one from 10 AM-2 PM and one from 4 PM -9:30 PM; They have been with us for 5 years and are very caring, helpful, trustworthy and devoted to my wife. This situation is very comfortable for us and I do not want to alter it. However, our daughter, who was married to a Mexican and is totally bi-lingual and was living in Texas, lost her only child to suicide 2 years ago. WE invited her to stay with us until she got over her grief and divorce.As a result, we built an addtion to our home to accomodate her, and she moved in. Soon, she started taking over evrything. Trying to re-decorate our space; changing our garden and patio; ordering the 2 helpers to the point that one of them said she would quit if our daughter stayed. I talked to our daughter, saying that she was welcome to stay, and assist us when needed, but we were happy with our situation and did not want to change it to suit her desires. She said that she had planned to spend her life here taking care of us. I said, thanks, but we already have that aspect well in hand. Our daughter got furious and left in a state of violent anger after destroying some art work and old photos that my wife nd I cherished. She moved away and said we were no longer her parents and she wanted nothing to with us anymore.Recently, she was in a serious auto accident and needed our help physically and financially which we have gladly provided. Now that she is almost recovered, she is hinting that she would like to move back into our house. Neither my wife nor I want that. I´m worried that if I tell her she´s welcome to visit or stay for a short time, but not to live here full time, she´ll become violent and try to commit suicide . I´m told by my other children that she´s already tried to do that.  So...any advice as to how to handle this conundrum would be appreciated.