I believe Michelle was simply calling into CTU - calling Tony's group, figuring she'd get a hold of Tony the best that way. Maybe she's like the rest of us and can't remember a phone # unless it's programmed in her phone book :)

Seemed pretty reasonable to me.

If I were an agent, I'd put together a few logical statements and come to a theory. 1) She knew they just got to the building 2) She knew how many people kidnapped here 3) She knew how many people she'd seen in the room where she was being held hostage. 4) She'd seen the number of people chasing her up to that point. But yes, that was probably the weakest of my complaints...

I might buy that except for the fact that only two people were hunting Michelle. His daughter's life hangs in the balance, and only two people are looking for their trade bait? You're really reaching here by suggesting more people were there. Remember, this wasn't even their hideout. Their original hideout was blown. He had just gotten to that place within the last hour (after Tony let him escape).

Still, you've got a fugitive who most likely would do anything to escape. It isn't that unreasonable to guess he might go down there.

She probably was just calling the main number, I'll give you that. But she either memorized the main number or she had it programmed in her phone. Either way, she could have another phone number with it (in her head or in her phone). I'd go straight to the guy who would (to her knowledge at least) be the one to order men around, and who also happens to be her husband.