Congratulations, They can have more in the next few days or weeks or even longer. Depends on how relaxed and comfortable she is and that she feels safe. Just keep a close eye on her and fish out the fry using a cup.
I had black mollies in a 20 gallon long tank years ago and they had fry and I was happy. Then they had more fry and I was worried. Then they had more fry and I was out of room in the tank. They breed like rabbits. I ended up only wanting males. (I gave most of the fry away when they grew some.)