Hermione - HP's birthday - Canon

[Margaret]

> Kemper:
> The parents didn't have access to their original memories regardless if the memories were obliterated or not.
> 
> She should have advised her adult parents on the life and death situation she and her folks were in and share with them her idea of them moving to Australia.  Then, respect whatever decision they made.  Magic is not Might.
> 
> JKR's statements regarding the books or what happened before or after the books took place may be interesting, but those statements are not canon.
> 
> Kemper

Margie:
The fact that the charm Hermione used was reversible is, I think, rather important.

Hermione's parents were muggles who could not possibly understand the enormity of the situation, the danger to themselves or the danger that they posed to Hermione and her friends.  They could not and would not abandon Hermione and yet, as long as they were near, they were not only in danger but were endangering Hermione and, by extension, the whole wizarding world.  By implanting false memories, Hermione made her parents useless to the death eaters and by getting them out of the country, she made everyone much safer.  

It is not a matter of "magic is might".  It is a matter of protecting people.   

I'm aware of the fact that JKR's statements outside of the books aren't canon; I stated it the way that I did in order to make that distinction.

JMO,
Margie