Oke now I see your point. Here's my interpretation: Her complaint about how nice he is means that he's pushing things too hard and it doesn't come natural for her. I realize that OP would do anything for his girlfriend but doing everything for somebody doesn't make it all natural and has adverse effects. I compare it to the relationship between me and my dad (which is not a romantic one lol)
My dad makes my breakfast, asks me when I'm coming to bed, picks me up at 5am after clubbing, takes a day off at work when I'm sick. He's amazing but it's not healthy and it's unnatural. He is overconcerned and a control freak. I'm pretty positive that this is what's going on in OP's situation and I understand the female point in this story too
A relationship is a healthy balance of giving and taking. Not give give give give so that the partner is pleased. You have to have a fight sometimes or be selfish sometimes. I know a lot of needy couples, calling each other every day and watching their every move. It works for some years and then one of them realizes it's not very natural and they start 2nd guessing.
The woman has been brave to admit this. It took guts to do that and I'm sure she has never had bad intentions with OP