She's had it for quite a while now and she's acting,eating and pooping normally so what is it? It's pink and redy/purpley little veins maybe on the top, is it infected? Is that dangerous? Its not hard- a bit squishy. Seems fine really but I'm worried.

It could be a number of different things but we won't be able to tell you for sure. It could be as simple as a cut that will heal or it could even be some kind of infection.