Why is Draco an only child

[potioncat]

No: HPFGUIDX 127257



Emma wrote: 
> You are probably right.  Your explanation makes sense.... It's just
> that it seems to me that the experiences of, say, Crouch senior are a
> dreadful warning about the danger of having only one child.
> Something happens to him and you have no one left.


Potioncat:
There is a very good reason the Malfoy's only have one child. 
Everytime a child is about to be concieved, someone bangs loudly on 
the door. No matter how many security trolls Lucius gets or how 
terribly he punishes the House elves for letting an intruder in, 
whenever it's a fertile time of month, there is an interruption to any 
erm... conceivable activity.

The Malfoys don't know who could be doing this, or how she gets in, 
but they did once catch a glimpse of long blonde hair and found a 
sprig of bloomsberry on the carpet outside the door.




Potioncat (JKR doesn't want the plot complications of another Malfoy 
child.)