Re: Earnest help needed!
There is a small dua meant exactly to repell the bad bahevoir of some people. I will write it in English here:
Summum Bukmumm Umyun Fahum laa Yarjaoon.
Just recite it before you meet her. InshAllah you will see the differences yourself. But, having said that, you should behave normally with her. Respectfully yes, but be careful not to compromise on your dignity by getting too buttery.
Best of luck !!