Wow, just wow. I wrote this huge thing, don't even know how much of it is coherent now... yeah enjoy
1. Religions don't really have more proof than hearsay nowadays, unless you yourself had a personal experience, so yes believing in this I think is on par with belief in religion. The main difference is religion even if I believe it to be filled with lies still does have some decent stories to support certain things morally. Story of the good Samaritan is still one that I like as it teaches to be kind to others and not to judge based on outward appearances or affiliations. The belief in a God or whatever dependent on the religion is really just there as a means of control. Not everyone can necessarily be as rational about morality, so having a final judgment from a supernatural being is a good way to scare people into following said morality. Whereas believing someone could lift water 3 centimeters? I don't see anything of real worth here. Is there a point to this? Any real meaning you can make out of it?
2. People do lie about things for petty things. Santa Claus. Why make up a myth about this man? Cause one month out of the year it gives you an effective tool to control your children? Cause children will believe it and it is funny? Because corporations want to sell tons of junk with his image brandished on it and because he isn't real they don't have to pay for the rights to use his image? There are billions of reasons to lie about things, sometimes they are good, sometimes they are not, but either way it takes some sifting to find the kernel of truth in most stories, and even things you actually see on a daily basis.
3. Again with the static electricity. If she could cause static build up in her hand to move the water with only thoughts that is just about as unbelievable as moving the water. Charging static electricity is not something are neurons are built to do, nor are movements within our body as most parts are built not to have friction within, which is what could cause a buildup. And if it is something in her biology that lets her do that there still would be science behind it, not just thought. Electric eels can generate electricity, but it isn't like they just think it and it comes into being, no they need their body systems working properly for it to work. So is it impossible? Of course not, but then again in my belief system everything is possible and likely happening somewhere in some plane of existence, at some time, but it is very improbable.
Sigh, I am sorry if I offend anyone with this. I understand part of it seems to be mocking belief in general. If you truly believe in something good for you, just know that not everyone will be able to see things your way and you will have to just deal with it. I, myself, believe in ridiculous things myself that I doubt many of you could even comprehend. What ultimately matters in matters of faith and belief is the effect it has on you. For some it is the spark that ignited their altruism, for other it just ignited fanatical rage and obsession. Belief can be good or bad depending on the person. What you need to maintain is openness. Without openness you will condemn those who believe contrary to you, and in the worst cases feel it is your duty to enact the damnation. But with openness, you will be much more likely to strive to better others. This does not mean you can't stand up for your beliefs, or even argue against others, but it does mean you should look at the results of that belief and value it based more on that. Regardless of whether you really believe in karma or not you can see it has worth because it encourages people to act good to others, and in fact that alone makes it ten times more likely to come back ten fold. But believing some woman in China, who is dead, lifted water 3 centimeters? Does it even matter? I couldn't bring myself to care if she could walk on water, and people taped it, to me it would be nothing more than a fun tidbit of info unless there was something bigger attached.
That being said fantasy is the very first step in making something real, it just often does not take the form originally imagined in. Conjuring fire like an evil wizard is something grenades and flamethrowers do quite well. We might not yet fly like birds but we have invented ways to fly.