Buzz to order

I have my first grow. 1 lone female she is on her 7th week of flower, on her 5th week of flower sge lost a limp due to spot heat from my light.
So i dried the limb, it had a little bud on it. I just smoked the dried product and its a nice mind numbing head buzz, very relaxing.
It is a sativa I think from bag seed i can tell by her leaves.
If i let her finish or will the buz be stronger or change.
I have heard if you pick a plat early you get a headdy buzz if you let it mature its a body buzz.
my wife suffers from migrain headache. and i dont want to be able to grow both a head buzz, and a whole body buzz so i can buzz to order.