An order of nuns says Mary MacKillop helped save formerly conjoined twins Trishna and Krishna:

Sisters of St Joseph of the Sacred Heart, founded by Blessed Mary in 1866, held a 24-hour prayer vigil during the orphaned twins' marathon surgery and yesterday said they believed the soon to be saint helped doctors perform the miracle.

This would be a little bit more believable if the twins weren't separated through a medical procedure. If these prayers alone caused the twins to separate, then that would have been a real miracle, but since that obviously wasn't the case, it almost sounds as though they are trying to take the credit for the painstaking work of the doctors.