What Does It Mean When A Girl Sends You Picture If Herself ?

I was txtin this girl alot and i feel like she really likes me. im 15 shes 16 btw. anyways the other nite like outta no wer cus she didnt txt me bak 4 like an hour b4 this she sends me a picture. i told her it was really sexy nd she said lol thnx. she also always likes to flirt like wen i told her i gt my finger jammed while playin football she said awww i wish i was their so i could kiss it :) so 2 questions do u think that pic ment she liked me nd do u think she likes me anyway thanks also we r friends in skool if that matters