My budgie laid an egg! Help please!?

After I got home from school today, I went in my room to say hi to my birds and I noticed there was a egg in one of the food bowls. I've noticed Violet (the budgie who laid the egg) has been in the food bowl lately just laying in there. I thought she was just digging out the hulls, but she used it as her nesting place. I removed the egg and put it into a nest box. I put Violet and the nest box in a separate cage because all the other budgies were bugging her, all the females were extremely curious and all the males wanted to mate her. I checked the egg and it looks transparent, its unfertilized right? But I heard that removing eggs makes a female want to lay more and the thing I fear most is her getting egg binding. I read in a book when females lay more eggs it makes their life span shorter? I love my birds very much and I'm worried. The bird that mated with her is her SON! Will that effect the chicks? But too tell you the truth I don't really want to go through having more baby budgies again. Violet had her first clutch in August 2006, and only 2/4 chicks survived (the dad accidentally cracked one of the eggs, one was infertile, one starved because Violet didn't feed it, and somehow one broke its leg and died), I cried for both of the baby birds and the cracked egg and missed school. I'm in high school now and I can't really afford to miss any more days of school. What should I do? I have Violet and her son (which is now her mate) in a separate cage with the nest box with the egg in it. She doesn't spend much time with her egg, but when I hold the egg in a cup form, she uses my hand as a nestin and rolls her egg under her chest and lays on it in my hand. Please what should I do?!