In addition, when a higher infinity being comes down to lower infinity, they are often unaffected by the laws of physics, simply because they transcend that system of causality. That's exactly what is happening here. She is from a higher infinity, and the game is a lower infinity - we will use infinity for the lack of a better term - and of course, the lower infinity doesn't follow the same rules as the above, so that's why they are unaffected by these rules set in place. You could argue that they should get law manipulation resistance... but why would they? They are just simply operating in a different causality system. They would, however, get law manip resistance if some character tried to use their hax and it didn't work at all, sure. But simply because they transcend that system of laws doesn't grant law manip resistance at all.
Now, back to Arale. In the chapter, we see her enter the game and she takes more people than is allowed by the rules of the game. But she continues through that just fine. Now, why would this be law manipulation resistance when it is one of the clearest forms of data manipulation? She is manipulating data, codes to suit her need. And rules, in this game, are also data. Everything is data.
So, now to you... Can you explain to me why you think manipulating the data of a game is somehow resistance to law manipulation? And keep in mind, she is a bug in the system, and the system has no way to actually fight her or reinforce its laws on her because it's already pre-developed without that kind of problem in mind.