I have this friend?

So I have this bigger friend of mine, she's quiet and very sweet. Wouldn't hurt a fly, she can be funny sometimes.

She packed on some weight, but has been working to get under 200 lbs. Anyways, we always take her cause she's unattractive. She's got a pretty face but I take her with me for a confidence booster. No guy ever comes up to her and if someone does I always come in the middle of them and "steal the guy" she's talking to. My male friends and I discovered her sister who looks like a model. Is beautiful. Am I a bad friend? She needs a reality check, no guy wants a fat girl. But I don't know how to tell her?
I have this friend?
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