Tilly Green is the deuteragonist of Big City Greens. As Cricket's older sister, she is the only daughter of Bill Green and Nancy Mulligan who moved to the Big City alongside her family to live with Alice.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...
