One of the core RP tenets is treat women like children, and this is precisely why.

Skip to about 1:00. Look at the flash of anger right before the tantrum begins and even as she's crying the girl keeps shouting, "I didn't do it."

Now skip to 2:00. What happened to all the crying? To the emotional devastation of the little girl as the mean dad is bullying her into a confession? Oh right, it's a complete farce meant to trick the dad into dropping the issue.

Barely 30 seconds after the tantrum begins she's back to normal again.

The girl doesn't look old enough to have developed this behavior through social conditioning, which leads to one of the more bitter pills to swallow; women's propensity for lying and manipulation is hardcoded into their DNA. Especially when it comes to emotional manipulation via triggering of a man's protective instincts.

If she has this much control over her ability to cry at will and weave in and out of displays of false emotional turmoil at this age, her ability to perform these theatrics with greater ease and efficiency as she gets older will only increase.