Well I must say the last "Please help me brother" scene was fantastic a pleasant surprise. As I am always wanting perfection, lol, the only thing for me, rather than her inviting "big" bro to fuck her ass would have been if he'd have slid it in anyway. As she bends over to show him her pussy / ass he gets nice and close and slips it in. Then she can either love it or hate it!!!
good idea.
I've had a quick look at the scene, and there seems to be some audio sync issues with one of the cuts. The one where she's first gets the cum in her mouth at around 5:50 she's says something about juicy cum but her mouth isn't moving.