The Ghost star checked into Sherman Oaks Hospital in Los Angeles where she received treatment over two days before heading home.
Her publicist claimed Moore was battling "stresses" and "exhaustion" and needed professional assistance to "improve her overall health".
Now Monster filmmaker Jenkins has assured Moore's fans the star is getting better, telling E! Online, "I just saw her and she's doing great. I think she's doing much better than it's made out to be.
"Demi is awesome and so strong. I also hate when people make it a bigger drama than what is going on. She's great."