GIVING a BACK MAGE to a cute WOMEN :P?

shes a motherly figure, a very true close friends and an elder sister to me..shes 36 im 16(both females.. shes been there for me in everything when i got addicted to po*n, when i was s***ually ulted and abused at home, and everything.. shes not a pedophile but then she was tierd and we were talking for 54 minutes on the phone and then i suggested she needs a masage and she was like yh so i offered to give her aa masage and it would be better at her home and she said ok when i see u.. so i want to know how to give a good masage just a nice friendly and loveable mage but what about if she doesnt take her shirt of how do i do the mage :/? im a little confused should i use oil or coconut er cream?