Kleinzeit I understand your points, as I said I can see its complicated. In this case I don't think it was fair on anyone - her own child included - not to provide a bit of information. I treated him as I would any friend of my kids who was over excited visiting for the first time and being a bit naughty - kindly but firmly. I am not one of those parents who won't tell other people's kids off, which is why I am one of those parents who is normally more than happy to have a house full of other people's kids - most kids behave very well in my house and respond very well to boundaries and being a bit no nonsense when necessary, and they always come back :o However from reading the boards I know that you don't use the same tactics for children with autism! If she'd just blimin told me what works best with him he would have a less stressful and calmer time presumably, as might we!
As for inviting him to play again - you are right, I don't know, because I don't know if he would actually play with the child of mine he is friends with inside our house. I would absolutely watch / mind him for her if she asked. However he didn't play with my DS when he came "to play" he just ran in and out of my older children's rooms and my room, taking electronic gadgets and other possessions, and repeatedly picked up console controllers and asked to play on the console. So inviting him "to play" with my youngest child would be a bit of a euphemism for offering to babysit I suspect... I could invite him over for an upfront console playing session I guess, though that is not something I'd usually suggest and I don't know if it would actually be successful! I wish the mum would talk to me in an upfront way, I'd be willing to make allowances and do things differently, but not to have an exact replay of what happened last time, as it wasn't good for anyone involved!
To date I have said no to having him in the house, but encouraged the DS he is friendly with to play with him in the playground. The other boy calls for him most days and is often waiting at the end of our drive when we come home from somewhere (his mum is always in the playground, from where our drive is easy to see, with his younger sibling when he does that). I don't make DS play with him, I don't think that would be right, but he usually does. They play well outdoors where both have the option to get away from one another if they get bored/ have a disagreement...
I'm tempted to let sleeping dogs lie and leave things as they are, especially as they are building a house in another village ten or twelve miles away and planning to move there when it is finished, so they won't be here long term.
I don't know - maybe I should let her know I'm happy to watch him occassionally if she wants to go to the shops - it would be psychologically easier on DS if he was here for me to mind for an hour and not "to play" if he is going to completely ignore DS like last time!