Curious....

So I went to my doctors appointment yesterday at 38w 3d.. I am dilated to 3 1/2 and my cervix is thin. I asked her to strip my membranes but she said since I’m already dilating and thinning there’s no reason for her to do that and just by her checking my cervix at this state it would do as much as stripping my membranes would. Is this normal?