The WSJ article I referenced above says Brother Manuel García Viejo--not Miguel Pajares--died on September 25th and the nurse developed a fever on September 30th. I don't think we're talking about the same person.

Edit: A different WSJ article mentions Pijares and that this nurse tended to him, too. So this nurse was exposed to two different Ebola patients.

Since Pijares' death is well outside the three-week maximum incubation period, it does not seem to make sense to link the nurse's infection to him versus the much more recent patient, which is squarely within the time window we would expect.