first of all i think her style looks gorgeous
i usually do the same 'lazy bun' about everyday, except i have bangs
to do so i usually have added pieces, since my hair is too short to do a BIG bun
so on top is my real hair and i can tell the diference between the hairs, there's something about the shine that gives it away (i'm not talking about synthetic hair shine since isn't synthetic hair), even though my hair is really shine too, isn't lack of shine, more like a diferent shine lol.. sometimes people can also tell my the thickness of individual strands (fine, medium, coarse).
i think my blending is about 90%, i don't think anyone but me can tell the diference, because i'm really hard on myself, and well.. i know where my hair is
so i think her hais is a weave, yes
i think she has shoulder lenght or something?
in the pic: green where i know its her hair, some of the others might be too, but isnt too obvious to point out