Looks beautiful!

The only thing I wasn't fond of was using space to remove the weeds. Soy could just move around the garden and automatically cut the weeds on the tile she lands on.

There wasn't any reason not to press space.  If you wanted, you could add flowers that you shouldn't cut then it would add a bit more strategy to the game and make the "space to remove" action useful.

Hope that makes sense :)

Great idea with the music getting faster as time goes on. It really makes it feel more urgent and out of control!

This is a great game. Here's a few things to improve it:
1) have some feedback when removing the weeds, like some sound and animation
2) some juice, like screen-shake + sound when a weed over-grows

Otherwise it's a really good game, great team work!
P.S. I hope you continue to make it, and add another boy character, so I can play as the soy-boy (I'm joking about the soy-boy, don't take it seriously ;) )