Vet check might be a good idea... also, that's her "glottis" that's pinkish-red, not "her tongue".Snakes can have an infection of their glottis, btw.
FYI:
"Snakes have a small opening just behind the tongue called the glottis, which opens into the trachea, or windpipe. Unlike what mammals have, the reptile glottis is always closed, forming a vertical slit, unless the snake takes a breath."