Verbal abuse

Why is it so damn hard to get over someone who just verbally abuses you to the point you feel so small and so insecure? No matter how many times they say their sorry they aren't. Its every day. Then they blame it all on you. I wanted better for my child. But my baby doesn't need to see it's momma verbally attacked. I just wish I could leave amd not look back. But it's hard.