This morning i woke up and noticed one of Princess's nails was really dark. I checked her out and all her other nails were fine. i pressed it and moved it a bit and it doesn't seem to bother her. but instead of it growing downward and curling, its growing a wee bit upward. i think she may have hurt her nail, it bled a bit and then the blood dried up. what do you guys think? does anyone have a suggestion as to a soap or antiseptic i can put on it? should i cut it down or file it?