As a mother of three (now adult children), I too had a child who was so sensitive that it was a challenge to find ways to help her. Unlike your daughter, however, she would quietly withdraw and not voice her true feelings; so you are fortunate that she is expressing them fully to you. Better that than repressing them and not opening up. When we expressed concern about our child to her nursery school, we were finally able to get some advice from a very wise primary school teacher with years of experience. She encouraged us to get her involved in solo activities which would help make her more independent and emotionally strong (like piano lessons, art projects, cooking and anything that she could focus on on her own, without too much assistance.(Even a two and a half year old can participate in drumming, as an idea) Eventually, we found that she excelled in skiing, which can be an "all by oneself" sport. While your daughter is still very young, the advice may still be applicable, in that stronger independence and self esteem will provide her greater security in uneasy or uncomfortable situations, helping her to cope with disappointments. I, too, worked; and found that by focusing more on her without my other two children around, helped her become stronger. (Mine was a middle child, whereas yours appears to be the eldest?)One last idea: Provide her a roll of butcher paper (for floor drawing) and ask her to create something on her own: a town, an airport, a park...anything that she likes to do. She may become engrossed in the project, and project some of her emotional responses onto the places or things she is depicting in her drawings. I have reverted many times, with my grandchildren, to that long ago advice about solo activities building stronger self and self esteem (to compensate for other weaknesses or over-emotionalism.) Hope this helps in your thinking process.