I read your last question as well as this (which doesn't seem to be a question, more a vent of your feelings) and your So What Happened...
and you still seem stuck, like you just don't get it.
Giving your children *healthy* love, which includes guidance, boundaries and discipline, is never a bad thing. But what you are describing is very unhealthy and codependent: giving your kids all they want isn't what they need at all. Years ago, I read a great article on parenting entitled "The Gift of 'No' ".... the word "no" gives our children a wonderful opportunity to learn how to navigate the world with realistic expectations of other people. Saying no to our children gives them structure; they realize there is a time and a place for things, there are limits to what you may or may not have--- in short, we teach them reality. We teach them to work for what they want when we let them earn it. We teach them patience and perseverance when we use this word judiciously.
I know you have joined Parents Anonymous, be aware that 12 step programs are known to have serious flaws and a lack of oversight. As Doris Day suggested, you may just end up in a room with a bunch of other hurt and angry parents without good counsel. But it's not enough--as Marda pointed out, you have zero boundaries and until you work on *you*, that's going to continue. But can you also try to imagine how good it would feel that when your daughter was being rude or dismissive of you, that you could look at her and say "I don't like how you are treating me, I'm leaving now" and take charge of your own actions, your own self? Do you see that you are choosing to be subservient to your own child? Because I can hear the humiliation in what you describe.... my guess is that you are very enmeshed in a codependent relationship with your daughter and counseling would be a great start.
You made her 'your world' at the expense of who you are. You *do* have regrets. It's time to find out who you are again, to challenge what you think motherly love really is, and to stand up for yourself. Or it will continue....