Is it normal for my younger female cousin to place her hand on my big cock??!!

im a 27 year old virgin guy.very tall,its about my cousin she is around 4 years younger to me..this incident happened in 2008,i was around 20 she was 16 we were just playing in dat i was sitting on a chair and had put my legs fully stretched on another chair so she jst came and sat on the area of my knees in a 90 degree angle and i kept on doing my legs up and down but then within 10 seconds or so she just raised her right hand and put it completely on my cock like her full hand was covering my cock and kept it there for around 4-5seconds and while she had put it she was also looking at my cock area,where her hand was and her eyes had a kind of inquistive,curious feeling like a kind of light strange of light,she was a little happy too and this all happened soo fast then i didnt knw how to react.
when she was around 12 and i was 16 we were once in a room with lights closed and there i touched her boobs like soooooo many times had a complete feel of them while playing likee we used to sit i made her sit on me and then i used to do this while playing,mayb she was too young to understand all this,
and then once when i was around 26 she was sitting beside me and then she had to switch off the comp the button was at place near our legs soo while doing soo her right boob was completely squeezed on my left thigh for around 3-4 seconds...i had the time of life i feelt her complete boob like everything....
now tell mee if she wants sex then how to aprroach her and fill her hungry white pussy with my long and and strong cock??
btw shes around 5 feet 1 and i knw she likes tall guys
and also do tell me what was she mst have thought in her head when all these things happened one by one.
thanks in advance