Once the eggs are laid in water, they will not hatch unless 1) they are fertile, 2) you retrieved them from the water almost immediately and 3) you did not turn them during the retrieval.
A turt will only lay in the water if she is VERY stressed and unable to find a more natural nesting spot (dirt). If this is her first clutch it's very likely she still has more in her and still needs to lay. Do you have an area outside where she might be able to lay?
You will need to stay with her during the egg-laying process if she's outside since turtles are much better climbers and escape artists than what most people realize.
And please keep us updated.