re: MISSING SIL IS BACK!!
I hope she returns home safe and sound by the grace of God. I found these duas on the net:
Al - Mu'eed
-The one who brings back the creatures after/from death
-The Restorer, The Resurrector
When any person is missing, this should be recited 70 times in each corner of the house when everyone is asleep in the night. He'll return in 7 days or his whereabouts will be known within this period.
For the return of a missing person:
Recite verse 70 of Suratul Haj 201 times on Thursday night in one sitting.