yeah that's a stitch. just see if it's still attached and call and talk to them, see what they recommend. Don't stress or worry. those stitches will absorb eventually(same suture used at the clinic I work at). Keep her from licking and put a little neosporian on it.
Thank you for responding. You think she pulled it out? I won’t be able to take her to vet tell Tuesday there closed tomorrow and Monday I can’t you think she’ll be fine? Will it get infected I’ll put some neosporian on it.