How do you get mewtwo without action replay or trading Pokemon Diamond and Pearl?

follow these steps or it won't work (you can do this when ever bfore or after the 8th gym)

1. go to Floarmoa town
2. go to the left were the flowers are
3. then go straight up
4. then go up in between the two trees
5. talk to the man
6. he sells honey
7. by 1
8. then go back to the Pokemon center
9. then up to the dirt road
10. go right
11. you sould pass a bridge
12. go intill you run into the big fan
13. find the honey tree (the yellow tree, that's up)
14. talk to it
15. then spread honey on it ONCE
16. then go back to the bridge
17. save it
18. talk to the girl to your left
19. when you two are talking you shut it off

20. then you it back on

21. go to the Pokemon center

22. then go to your PC

23. then it's in the 18th box

    2 questions: 1. is it the tree near the door or near the water? and 2. who's the girl on the left?