PLEASE HELP REALLY IMPORTANT!!!!?

my friend emily is 13 i was at her house and we were in her moms bathroom putting on make-up and i saw her step on the scale she said uhhh!!! im fat im a 114 pounds!! ( keep in mind she 13 and 5'7 ) im like thats nothing ur tiny!!! she said no im not! im huge!!! im almost 15 and im 5'8 and i weigh 108 so were kinda close but she always talks about herself in a negative way like.... im fat stuff like that and that scale thing happened a month or two ago and i was at her house last week there she was on the scale... :o guess how much she dropped! now shes 104! im really worried! i told my mom and she even thinks she looks too thin now counting she was really thin already... so i talked to her about it yesterday and i told her she looks way too think like a skeleton and she needs so stop dropping weight or she will be anorexic... well she said im fine!!! i look good but im still fat!i need to loose a couple more pounds!!! i said NO u dont!!! im like this isnt funny u look gross!!! well shes in denial... her mom has lupus so she really think emilys still 115 or something... she doesnt really pay attention about how she looks... so she told me yesterday i think u need to stop obsessing about my weight because im perfectly fine and if i was underweight or getting too thin my mom ( with lupus ) would tell me!!! and before that i took her to the computer looked up thin teens and she said this girl looks normal: a href="http://www.google.com/imgres?imgurl=http://fashionlawyerblog.com/wp-content/uploads/2008/08/skinny_model.jpg&imgrefurl=http://fashionlawyerblog.com/%3Fp%3D610&usg=__qUVz6S7hO-tL_4JFYg9aqi2Lnlg=&h=456&w=342&sz=57&hl=en&start=0&zoom=1&tbnid=UXLuFlXv1Ls_MM:&tbnh=134&tbnw=109&prev=/images%3Fq%3Dskinney%2Bgirls%26um%3D1%26hl%3Den%26client%3Dsafari%26rls%3Den%26biw%3D1082%26bih%3D884%26tbs%3Disch:1&um=1&itbs=1&iact=hc&vpx=244&vpy=85&dur=4592&hovh=259&hovw=194&tx=127&ty=220&ei=MAQNTYD9JorGsAPxnM2PCg&oei=MAQNTYD9JorGsAPxnM2PCg&esq=1&page=1&ndsp=36&ved=1t:429,r:1,s:0" rel="nofollow"http://www.google.com/imgres?imgurl=http…/a but she said this is normal!!! im like shes anorexic!!! shes like no shes not! u know thats what i look like!! im like no emily u dont... then she said thatS how i wanna look!!! im like ewww if u looked like that u would die! OMG it was on going!!! i just really dont know what to do!!! please help me!!!! if ur wondering what she looks like this is her build.... just shes a woman and just picture her 13 with that build ok!! a href="http://www.google.com/imgres" rel="nofollow"http://www.google.com/imgres/a imgurl=http://msnbcmedia2.msn.com/j/MSNB… NEED TO SEE THIS!!! KINDA OF HER BUILD... SHE DOES HAVE THAT MUCH MUSCLE AND REALLY THIN.... ( i was talking about my friend btw ) well ik that emily does not starve herself because she eats a ton!!! and memy friend emily is 13 i was at her house and we were in her moms bathroom putting on make-up and i saw her step on the scale she said uhhh!!! im fat im a 114 pounds!! ( keep in mind she 13 and 5'7 ) im like thats nothing ur tiny!!! she said no im not! im huge!!! im almost 15 and im 5'8 and i weigh 108 so were kinda close but she always talks about herself in a negative way like.... im fat stuff like that and that scale thing happened a month or two ago and i was at her house last week there she was on the scale... :o guess how much she dropped! now shes 104! im really worried! i told my mom and she even thinks she looks too thin now counting she was really thin already... so i talked to her about it yesterday and i told her she looks way too think like a skeleton and she needs so stop dropping weight or she will be anorexic... well she said im fine!!! i look good but im still fat!i need to loose a couple more pounds!!! i said NO u dont!!! im like this isnt funny u look gross!!! well shes in denial... her mom has lupus so she really th and my mom think she may be making herself throw up cuz yesterday we ate dinner then she when up stairs so i followed her but she didnt notice she went to her mom bathroom and locked the door so i tried to look under the door at where her feet were and then were by the sink for like 3 or 4 minutes with the water running really high i could barley hear wat she was doing but then i saw her feet was over to the toilet and go pee then after that she came out and asked me where i was... i didnt tell her but anyways PLEASE HELP HER AND ME!!!! AN