Huge congratulations, I'm so delighted she's here

. YOU DID IT - how fantastic is that

, don't ever underestimate what you achieved, you are fantastic and she is here because of how strong you, her mother, are (you can correct my poor grammar for an English assignment lol)
Please try to let the guilt over the birth slide away, only a couple of generations ago the father would never have been allowed in for the birth anyway, and there's research being done showing that a difficult labour can actually lead to anxiety and PTSD in partners who witness it (it seems to be because they are seeing two people they care about suffering and their instincts are telling them they should be doing something but they don't know what and they can't leave without feeling they've let the woman down) you may well have done him a favour and protected him and his future relationship with you and his daughter.
Take good care of yourself now too, rest when you can and say yes when family offer to do things for you, anything that let's you sit and enjoy a cuddle (or a sleep). Eat well, drink plenty and keep taking vitamins to get your body back to full strength, all of this will help you with your anxiety and get you hormones settled down into a normal pattern again (don't forget that's part of why you're anxious too, the first while is like being on you pmt week all the time!!). Don't judge yourself harshly as a parent, you are the mother she knows, so try not to compare yourself to others (although if you see them doing something you like pinch the idea

)
Good luck - YOU CAN DO THIS.