Lynny, normalisation/social role valorisation makes sense in the context of what happened in the past.
When I started working in the field of LD about 13 years ago, I was told that my lack of experience was a distinct advantage as I would not have to be 'retrained' so to speak.
In those days,we all had to attend a 2 day normalisation course to examine the history and culture of LD in the bad old days. I was horrified, and in that context, it really made sense.
Unfortunately, as often happens,people with,to put it nicely,not much imagination or vision take this principle and apply it rigidly, without thinking it through.
I wonder who exactly is 'tut tutting' you? (Bet I can guess though!)
You may not know that am a salt, and let me tell you, your daughter's actions are really encouraging and mark a big step forward. If I was working with your family, I would be as thrilled as you!
Smile and ignore.....