I'm so sorry for your loss.... but yeah, she's gone. Pop another seed, this time do it directly in the pot... you can even just plant the seed right where that one is - the soil is fairly moist... just make an indentation in the soil and place the seed, cover it with a little bit of soil and press down lightly... keep the area MOIST, not wet and keep it warm. I like to stick a couple of toothpicks around and lay a bit of cling film over it (I don't have anything I can use as a humidity dome)... if you DO have a clear plastic pot that you can invert on the top to keep the humidity in there, you wouldn't need to worry about keeping the soil moist until the seedling appears...
When the seedling DOES appear, you can prop the dome up just a little so fresh air can get in but the humidity is maintained... Remember, the biggest danger to seedlings is that you will drown them so do not over-water them... just spray the soil AROUND them with water - the roots will be encouraged to grow this way.
Good luck - onward and upward!