You’ve been around here long enough that you have probably seen Maggie’s testimony or as it was reprised in Factual evidence for Christians to rejoice in, remember and recount, and for true seekers to ponder.
I would say that the orchestration of those events and all of the necessary precursor events (myriads of them) so that the resulting consequences affecting Maggie’s life resulting as they did should qualify as being irreducibly complex. The probabilities are beyond calculation and the likelihood almost less than vanishingly small, comparable as noted to winning five different and independent lotteries in a day (was it actually two days in her case?), and winning them in the same order that the tickets were purchased. (Don’t forget the detail that only one ticket was purchased in each lottery.) If God can do that without breaking any natural or scientific laws, then he certainly can providentially guide mutations in DNA as well, and no ‘irreducible complexity’ need be postulated or result from the logical fallacy of incredulity.