"They had some things they wanted me to take care of, prior to taking Elijah to the daycare."

THEY - she needs to identify who "they" are because if her pushing the button on her computer was in fact what triggered the bomb, and their need for her to do this before dropping off her son means it was a timing issue, then she has the identity of at least one of the perps. It's a miracle she wasn't suicided.

EDIT to add that I personally believe a missile hit the Pentagon, and her pushing that button at that exact moment was coincidence, but I think it's important to explore all possible scenarios.