She's peeing on her own, can we stop stimulating her?

The towel in her carrier was wet three mornings in a row, so we put a litterbox in three days ago and bingo! She's been using it faithfully to pee ever since. We've tried stimulating her a few times since with no results, so can I treat her as litterbox trained and finally stop the rubbing? 

The reason I ask is because this is the kitten who only goes poop once a week. (She's in every few days getting checked by a vet, and they say all is fine! She's simply digesting so much of the formula that she has nothing left to expel. She is the most PERFECT bottle-baby ever!)

In previous bottle-baby litters it was pretty obvious when they were done since they all start pooping in their boxes en masse, but she could go another week before she does! She fusses so much that I think she's saying it's time to stop, but I wanted to double check as I don't want her to get bound up.

Oh! Forgot - she should be 4 weeks old on Friday and she's a very chubby 14 ounces! (Yep, she litter trained herself at three weeks. Perfect. Kitten. Aside from being mostly blind and partially deaf and covered in lice....)   

Thanks! 

It seems as she manages herself yes, I think so.  As long as you see she does in the litter, so.   

Although the stimulation is also working as a friendly massage, so you can perhaps if not stimulate, so massage her a little anyway.  Not to get pooping, but as a friendly massage, which licking is, when cats wash each other.

One of our forumites SPIFF, uses a tooth brush for such "licking".

Good luck!

She pooped the next day! And then again that afternoon. They were perfect little kitten stools.  

Phew, with everything else to worry about, this is a happy happy thing!