Thank you for your kind comments on my message, I'm still a bit unsure about expressing my opinions on GN so it's reassuring.
There's a lot of advice for you and your hubby Debcz, lots to talk and think over before you feel happier. If it's helps, I'd advise emotionally seperating yourselves, I don't mean disown their family, I mean imagine they are just some people you use to know and no longer get along with.
It's not a permanent mindset but it can be helpful whilst you are in such a whirlpool of emotions with thoughts wizzing around preventing a solution.
Your daughter is not the young woman who grew up with you anymore and the changes have snuck in without you noticing.
I'm sure if her work colleagues, friends and yourself were to write a description of her you would get 3 totally different pictures of the woman she now is. This does not mean she is being devious but just that different environments shape us, you just haven't fully absorbed the newer version of her.
It's not all one sided though Debcz, she hasn't noticed the woman you are either, you've invested so much into her success , her family and her life style. I'd assume you've always been a caring, nurturing, intelligent, hard working woman just from assuming things from your op. You still are, so use all of that and apply that energy into you and your hubby for a while, leave them be and let them stand on their own 2 well cushioned feet from now on.