I'm sure it's fine that you buried her right away. Those were just my thoughts from my experience. These things are so very hard.
Please know that you are very brave to love free, wild, creatures, that also can have relatively short lifespans.
We chose to pour our hearts and time into loving something that is free and and wild and that we can't control or keep safe all the time. Not everyone does this, it’s not easy. And when something like this happens, it can take a huge toll on our heart and mind and soul.
To me, a big part of what I love about loving the wild squirrels is that they are truly wild and free, unlike domestic pets that live in our houses. And that gives them an extra magical feel. And this is the other side of that, as we can’t keep them safe and pampered like domestic pets.
I’ve had so many wild losses lately I’ve had to decide can I take this? Would I rather just have domestic animals that stay around much longer? I’ve decided I love the wild ones, and so I will learn to handle this type of thing. It’s the other side of the magical coin which I adore; so therefore I will learn to be ok with both in time as I learn to process my heart in all these kinds of things. I'm not saying I'm totally there yet, it's a process. I'm just a fellow traveler on the journey to learning to love and live the ways of the wild ones.
Please be kind to yourself and know how brave you really are.
I hope something in that helps. The last thing I want to do is cause you one more ounce of hurt.