Numb3rs Fanfic Finders

Hello everybody,

I've been rewatching Numb3rs lately, but I've fallen out of fandom for a while now, but I'm craving certain kinds of fic and I hope maybe you can help me ^_^

1) Are there any Margaret!lives scenario stories out there? Either she didn't get sick, or she survived the cancer and how that would impact the story?

2) For that matter any pre-series story from Margaret's POV or centered around her  (preferably when Don and Charlie have both already been born)

3) Are there any Don and Charlies high school reunion stories? Or Don's college friends meeting Charlie pre-series

4) Anything where Charlie has to speak at a FBI conference or for some other reason comes into prolonged contact with the guys at Quantico, Alberquerque etc.?

Thanks in advance everyone^^