Over Revving

I stupidly allowed my 74 yr old Aunt to Rev my bike from a cold start.
And more stupidly I watched her do it!

Check the video
https://www.youtube.com/watch?v=PczQCnahLr0

What damage do you think this has caused.
It may be just in my head but i think exhaust sounds a bit louder, the engine a bit noisier.
It drives and accelerates fine.
Mileage is 85000 (in miles)
Should i get the bike checked out?

Thanks in advance.
 
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