This is not the first time that I read about muslims, both men and women, having visions of Christ and converting to Christianity. It is beyond my comprehension. I just hope that these visions continue to take place as well as the conversions.
My theory is that since 'we' (the West) have not done enough to reach the Muslim world with the Gospel, the Holy Spirit is taking matters into His own hands. God will bring people into His Kingdom from all corners of the World.
As you said, pray that the Holy Spirit keeps driving these conversions - and bring people from death (Islam) to life (Christianity) from darkness to light.