Another interpretation: "my twistings" [naftulei] her windings were not mine [of my own doing], for did Jacob go to Laban at all except for my sake?
Naphtali and the Twistings That Were Not Rachel's Own
Yalkut Shimoni on Torah 127:3
דָּבָר אַחֵר, נַפְתּוּלֵי פִּתּוּלֶיהָ לָא דִּידִי הָיָה, כְּלוּם הָלַךְ יַעֲקֹב אֵצֶל לָבָן אֶלָּא בִּשְׁבִילִי.