I'm curious though, if there is quite a few stitches, if she gets running could she not just tear them all out?
Is it possible you could sedate her a bit to go out, I know theres a sedative that can last for up to 6 weeks. This way at least she gets out, can move around, but its a little "doozy" so she's not running around tearing stitches out. Either that or put her in a smaller pen where she can still move.
Its likely going to be worse to keep her inside if she's kind of freaking out because she's more likely to tear stitches moving that way.
If you can do the things one of the above posters said you'll likely be fine turning her out.
Movement might even help reduce some swelling.