Interesting to see your sister in shorts or perhaps a skirt , its pretty strict here for RWYB's my local track insist on covered legs and arms and you must wear a helmet , they even scrutineer the vehicles before they go on track.
My 1/8th was 9.32@80.65 mph also , best 60ft was 2.44 but most were 2.5
Opening myself to ridicule here but here are my vids taken from my Blackvue, you can see I varied my technique each run but nothing made much difference
https://www.youtube.com/watch?v=T2jk5RJC3rw
In my defence I spent 15 years drag racing and building bikes , running cars down the strip is not my forte I'm more used to slicks and wheelie bars and 1.2 60ft s