Does this girl from my town have an eating disorder??? (photos)?

[Annabelle.]

a girl i went to school with has always been thin, but by looking at her photos she has lost sooo much weight and looks really drained, i'm worried about her, but i've never met her.
her last year ---- (girl on very right)
http://i771.photobucket.com/albums/xx356/elladuffy/36154_1616406883008_1021413523_1722804_4831138_n.jpg

http://i771.photobucket.com/albums/xx356/elladuffy/31803_442045857066_643607066_5670831_184054_n.jpg

http://i771.photobucket.com/albums/xx356/elladuffy/13041_1196303033338_1401342755_30703774_3778718_n.jpg





NOW - http://i771.photobucket.com/albums/xx356/elladuffy/35328_472249813367_628278367_6416611_7262457_n.jpg

http://i771.photobucket.com/albums/xx356/elladuffy/34632_472252568367_628278367_6416755_5133260_n.jpg

(BACKGROUND) http://i771.photobucket.com/albums/xx356/elladuffy/38451_472252103367_628278367_6416735_195765_n.jpg