Hi Tishee! Couple of things I see going on here
First, it is YOUR hair and YOUR money. You need to speak up to control the situation. I understand shyness, but wouldn't you speak up if she left the relaxer in your hair and went to lunch? You can explain to her that it is your preference that she do this step. What I would do if I was you is read SistaSlick's articles on the topic so you will be prepared to explain to the stylist WHY you feel this step is important. Your stylist might be someone who has never heard of it, or has read that it's not a good thing to do, so know your stuff - and stand firm on it.
Second, you said this is a new stylist. Have you been to her for non-chemical services, or at least interviewed her? Personally, I would be reluctant with 6 months of NG to "meet" a new stylist and her holding chemicals in her hand that could take ALL my hair off. If you talk with her in advance, maybe over the phone if you're more comfortable, you can have the "protein" conversation prior to getting there for your appointment. I think one reason some stylists are negative about client requests might be they haven't built that extra time into their schedule. So -- if she knows in advance, she can plan her time accordingly, as well as have an appropriate protein product on hand.
Good luck to you and congrats on the long stretch!!