YANBU to not offer other food, but YABU to assume what you offered suits everyone.
This is all very interesting. I have a fussy eater too. I too had an Annabel Karmel fed organic wunderkind until the age of 18 months. Then the fussiness kicked in and just got worse and worse, with constipation to add to the problem. I admit that mealtimes became an absolute nightmare, we'd both end up in tears, with puking and gagging. She has an egg intolerance, which doesn't help. She would quite happily eat nothing too.
Also interested in the noise/non food related texture aversions, mine has similar issues. Is there a connection anyone is aware of?
The jam sandwich is healthier remark made me smile. My paediatrician said a similar thing when I listed the limited range of foods DD would eat to him. Wholemeal bread, a scraping of organic butter and sugar free jam has got to be better than forcing junk into your child in the hope they eat something (and believe me, I tried that too).
The weird thing about DD is that she is fascinated by food, loves to help in the kitchen with food prep, loves to talk about what the rest of us are eating. Just will not try it herself, although at every family meal she is offered and encouraged to try whatever we are having (both DH and I are fanatical cooks, so there's usually a large variety of foods on offer).
My friends are aware of her fussiness, but I don't expect them to pander to it particularly. If she goes to tea at a friend's, I warn the parents to give her what the others are having, but not to take is as rudeness if she won't eat it. I do not expect them to give her separate meals, I'd send her with a packed meal if I thought there was going to be a big issue (ie, a long gap until she could eat again). Sometimes she completely surprises me, and the sight of her peers eating something prompts her to try it. She had some chips and chicken at a friend's house the other day, foods she normally wouldn't touch (she's a vegetarian by her own choice!) I am ever hopeful that peer pressure will help her overcome the fussiness, which is why I'd never expect or want friends to cater for her separately. I want her to know her fussiness is making her miss out on an important and pleasant aspect of life, sharing a meal with others.
DS is being BLW and will eat anything. I have high hopes (fingers and everything else crossed!)