Recently active topics in I want Sandy tagged with todo reminder

I like that you can set up todos and then Sandy will put them in you daily digest until they are done.

However, I have a few todos now that have been hanging around for a week.

Could Sandy send me a gentle reminder about certain todos.

eg.

" Howdy Chris, I noticed you scheduled to Clean your car a week ago but still haven't done it, should you make time now?"

Obviously this should be configurable so you can switch it off and set a default 'chasing' period.

or maybe an @pester tag?!