MEGADETH's DAVE MUSTAINE Asks Fans To Send Good Thoughts In Search For Missing Mother-In-Law

MEGADETH mainman Dave Mustaine sent out a tweet earlier today asking his fans to "please send good thoughts" to his wife Pam, "and prayers from those of you who pray, as we search for her mom," who is suffering from Alzheimer's disease.

75-year-old Sally Estabrook was last seen at a campground near Julian, California Saturday afternoon, a sheriff's spokeswoman said Sunday. Her husband noticed she was gone when he returned from a shower and couldn't find her.

Estabrook is 5 feet 4 inches tall, about 145 pounds with shoulder-length, blond hair. She was last seen wearing a teal top and white, Capri pants.

Because Estabrook suffers from Alzheimer's, she isn't very communicative, but might respond to her name.

Anyone who sees Estabrook should call 911 or the sheriff's department at (858) 565-5200.

Dave's daughter Electra tweeted: "Help find my beloved nana. She wandered off into the woods [on Saturday] @ 4pm. Has Alzheimer's-will not remember a thing!"

Mustaine revealed last year that a lot of the songwriting process for MEGADETH's 2013 album, "Super Collider", was affected by the fact that he had just found out his mother-in-law had Alzheimer's disease. He told Loudwire: "Until it happens to you, you really have no idea. And I think that when I saw how upset our family became and yet how we are able to provide the resources for her, it made me think about all the families going through this that don't have the resources to take care of a loved one. It also made me really appreciate our fans, because without them, I would not be able to take care of things the way I am. It really brings it all home. And then beyond that, I just did what any good artist does. I put my emotions into my music. That's the pain you hear in the music. It's real. People can say, 'We don’t want to hear this kind of shit,' but to me, this shit is important."

According to Mustaine, the "Super Collider" track "Forget To Remember" was written specifically about some experiences with memory and forgetting that have come very close to home. "The song touches on the no. 6 cause of death in America, Alzheimer's Disease, which my mother-in-law has been diagnosed with," he said, "and our world is now upside down. I did what I do best when I have something to say; I sing about it."

Mustaine elaborated on the song's lyrics, telling the "Shockwaves" podcast: "The sad thing about Alzheimer's disease is it's like watching an ice sculpture of somebody you love melt in front of your eyes; it's really, really painful. So the song has a double entendre where there's a guy and he talks to a girl in the song and it's kind of like the movie 'The Notebook' where the character in the movie, the female, comes in and out of Alzheimer's and she is present and she is back in La La Land again. So you don't really know in this song if it's a girl that is intentionally trying to forget a relationship with a guy or if it's somebody who has Alzheimer's disease, which, really, is what it's about. I worded it so that it could be either way."