For you fabric experts: I just purchased a Pucci scarf in silk chiffon and have spent the last half hour or so practicing ways to tie it on my handbag. In doing so, I have noticed lines forming in the fabric where it has been tied around the handles; I can't tell if they are runs in the silk or not - they don't look like wrinkles and they weren't there when I bought the scarf. Is silk chiffon delicate? I mean, I was pulling on the knot, adjusting it, untying, retying, etc. Should I expect this to not hold up over time and return it?