Firstly, cut yourself some slack. Being a mom isn't easy AT ALL. Secondly, you suffered from PPD, which isn't something you could control, so you need to forgive yourself and move on. Your daughter is still a baby and a small child, you have plenty of time and chances to be as good a mom as you can. We all make mistakes as parents and that's normal. Hence, don't try to be the perfect parent, especially not out of guilt about something you had no control over and which is now in the past.
Once you get rid of the guilt, and don't let that small time period during your PPD control the rest of your parenting relationship with your daughter, you'll find that it will be easier to be a normal parent, setting normal boundaries etc. without feeling the need to "make up" for the early months.
Lastly, it may help you to talk to a counsellor about your guilt feelings and fully forgive yourself. Go easy on yourself! your daughter won't remember any of what happened when she was a few months old anyway!
im still fighting my way through this ppd and it sucks *** i want to love my kids more