It looked a little deeper than skin deep, but not so bad that it couldn't be managed as an open wound if I could just get it cleaned. However, Curious was less than compliant with letting anyone close to that part of her right shoulder.
So we called Dr. Doerr and had her come out today. Turns out the wound was not caused by a kick, so Bekah's horse Emma is off the hook. It also was deeper than it appeared and went through a couple of muscle layers and a nerve was clipped too.
The vet did a standing sedation, and Curious used me to lean her head on and seemed to take some measure of comfort in my presence. It took about 14 stitches to close up most of the wound, and about an inch at the lowest point was left open for drainage.
Curious and Emma won't be back together until the stitches are out in another 2-3 weeks. A separation they are not going to be at all happy about. And I don't like having to leave Emma without a barn, even if she does have some large evergreens to take shelter under. Plus half the time Curious will stand out in the rain just so she won't be too far away from Emma.