Credits: Khoa Nguyen
This version comes with Golden Sticker cheat, Eco boxes and many more! Easter gifts (faerie eggs) Still not working.

You need:
-Fiddler
-Any browser that requires fiddler
-Download RosieCashCheat.zip link 1 or link 2

Step by step tutorial:

1) Download the file above.
2) Open Fiddler
3) Go into Pet Society. Once loaded, find for this line in Fiddler.
http://d2syub29v5lge2.cloudfront.net/game/pets/swf/xxx/database.dat
4) Right click them > Copy URL and go to Autoresponder and click ‘Add’. Or you can use the regular expression :

regex:(?insx)^http://d2syub29v5lge2\.cloudfront\.net/game/pets/swf/.*/database\.dat$

5) Now replace the database.dat with the rosie_database.dat that you just downloaded. Click SAVE
(Click on the drop down arrow button beside the ‘Save’. Select ‘Go To File’ and browse to the place where you downloaded the file to.)
6) Find for this line in Fiddler.
http://d2syub29v5lge2.cloudfront.net/game/pets/swf/x.xxx/shops/shopMystery2102.dat

7) Right click them > Copy URL and go to Autoresponder and click ‘Add’. Or you can use the regular expression :

regex:(?insx)^http://d2syub29v5lge2\.cloudfront\.net/game/pets/swf/.*/shops/shopMystery2102\.dat$

Now replace the database.dat with the rosie_shopmystery.dat that you just downloaded. Click SAVE.
(Click on the drop down arrow button beside the ‘Save’. Select ‘Go To File’ and browse to the place where you downloaded the file to.)
9) Find for this line in Fiddler.
http://d2syub29v5lge2.cloudfront.net/game/pets/swf/x.xxx/actions.dat

10) Right click them > Copy URL and go to Autoresponder and click ‘Add’. Or you can use the regular expression:

regex:(?insx)^http://d2syub29v5lge2\.cloudfront\.net/game/pets/swf/.*/actions\.dat$

11) Now replace the database.dat with the rosie_actions.dat that you just downloaded. Click SAVE.
(Click on the drop down arrow button beside the ‘Save’. Select ‘Go To File’ and browse to the place where you downloaded the file to.)
12) Clear cache for your browser.
13) Clear cache for your browser! i cannot emphasize this enough. Go into Pet Society.
14) Go into the MysteryShop > Mysteryboxes and Eggs and you will see the items.

Enjoy!