I didn't say that though. The "heel turn" in that we thought she was nice, but she turned out to have ulterior motives. I'm not concerned that she's turned nice, it's more just that the joke of her being shocked by sanji's kindness is a lame and predictable joke.
I mean, a gag's a gag. It's not going to work for everyone. I personally just don't think Oda earned this gag like he's earned past gags.
It's not a gag though. She wasn't shocked by his kindness, she was shocked by the fact that for the first time someone didn't hate her for her third eye. It was a legit character moment.