You should see the vet with her if you see redness, discharge, weeping, discolored fluid, or an odor.
The only thing you can do for her at home is wash the wound well with some betadine or peroxide. Then dry it completely. Then you can apply some neosporin ointment.
But don't hesitate to see your vet if this does not begin to improve right away.
Let me know if you need more help.
Yes. You definitely need a cone.
Go ahead and neuter those boys so that you can get some sleep! :-))