another humidity question

I know things like this have been asked over and over again, and I am sorry!!

But I know optimal humidity should be 50-60 percent. Mine is stuck at 70 percent. I put more holes into the plastic tub, with no avail. I hope to get a smaller water dish. Im also thinking it could be because it is raining and muggy outside, so I am sure that is affecting the humidity inside her tub. What do you think? Thanks, you guys are so helpful here.

Just got a smaller water dish, hopefully that will help. Cut a few more holes too :)