I can't tell from the pics if those are long tears or if they are deep punctures. If it's just a deep puncture, then clean with Betadine and stuff with Neosporin. You can also spray with Furall (bought at feed store). It's a yellow spray that is an antibacterial and keeps off flies - especially if you put her back outside.
If they are tears of more than a quarter inch long - I personally would stitch. I know what they say about dog wounds but that's more about deep puncture wounds and not inches of gaping open flesh. Besides, let me add my disclaimer (and experience) - this is my own opinion and what I have done.
Clean with Betadine, then stitch her up, then apply Neosporin and/or spray with Furall. Give Penicillin injections for a few days to ward off infection.
I had a duck that got ripped open by my large GSD puppy (at least that's who I think it was but can't prove it) - no puncture wounds that I could see but two long gashes in neck and whole belly area open and exposed. DH didn't think the duck could recover - today, a few weeks later, I don't know which duck it was.
I also had a chicken that got ripped up much worse than yours, by a gang of roosters (using their beaks) - she was fighting them and came out the worse. I sewed her up from back of comb to top of shoulder blades.
I find they are amazingly calm about these surgical procedures and I've performed many others on them and they heal really well. Put a towel over her face so she can't see and she should be calm. I never have anyone to help me hold them and they just sit or lay still for me.
Hope this helps - feel free to PM if you have any questions.