Should I communicate with my friend why I am distancing myself from her?

I have a friend that I have been friends with for about 4 years now. I consider her a sister and am the God mother of her child.
During the years we have been friends, I have seen her go through many things. Some things that are quite deceitful. I’ve watched her go from having the life a lot of people would want to a life that you will cry from depression all because she has entered into a relationship with the most toxic person.
She’s always lying, always being disloyal, she gets offended if you disagree with her deception. My friendship with her had become so draining.
Recently she contacted me to complain about her child’s father, however, she lied about what happened and I knew this. So I responded disagreeing with her behavior. She flipped out through messages trying to defend her behavior and in response I chose not to comment. I basically left her on read.
We haven’t spoke since then. It’s basically been about a few days.
I do want to reach out to her because it’s sad. Because I see her as a sister but she’s changed so much due to the horrible relationship she is in. Now I’m not saying it’s his fault but I’m seeing a different character I her and I just don’t like it.
Should I just continue to stay distant and not speak to her unless she reaches out- which I doubt she will. Or should I contact her and let her know how I feel? And what do I say?
Updates
10 mo
Thank you! I’m really big on communication. So sometimes I feel like I have to explain why I’m reacting or responding in certain ways. Sometimes I think people need to hear why another person is distancing themselves. Then again- I know that she will probably not understand so it is probably a waste. Thank you for the response tho.
Should I communicate with my friend why I am distancing myself from her?
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