Q:

Why does Jessica Jones have this power in the TV show?

In later episodes of the TV series Jessica Jones, the titular character develops the power to

 resist Kilgrave's mind control. Even after his powers are artificially enhanced, Jessica is still able to resist him without any trouble.

I get there is a clear explanation for this in the comics. It's also very clear that this explanation doesn't apply to the TV show, because this power develops while we're watching, and it's not helped by Jean Grey as in the comics.
Jessica wonders if this is the result of her

 being commanded by Kilgrave to kill Reva, Luke's wife, which was something she really didn't want to do, and that this somehow severed her link to Kilgrave forever.

However, I think Jessica is just shooting in the dark and her explanation is particularly unconvincing because several other characters were in similar (or worse) situations and this didn't help them. 
For example, Hope

 is still susceptible to being commanded by Kilgrave, even after being forced to kill her own parents, an act that is more horrifying than Jessica's.

So is there any convincing explanation for this development in the TV show? Or in interviews with the writers or actors?

Note there is a related question here, What exactly are Jessica Jones' powers?, but that's not what I'm asking. I'm not asking for an enumeration of powers; I'm asking about the origin of a particular power.

A:

Kilgrave's power to control others in Jessica Jones is explicitly stated as being caused by a virus that makes people susceptible to his commands.
Before Jessica escaped his control completely after killing Reva, we see that at one point she managed to resist his commands for a very short amount of time. During a flashback in the episode "AKA 1,000 Cuts", Jessica refuses to come down from the ledge when ordered to by Kilgrave.
As such, a likely explanation for Jessica's ability to ignore Kilgrave is that after prolonged exposure to the virus she built up some degree of immunity. This just so happened to coincide with her killing Reva, allowing Jessica to escape completely while Kilgrave was injured.

