In the case of the first site, the coding to the https paypal is incomplete, or is NOT going to her account the code stops at:
The complete code should be
which is the code from one of my working buttons... so.. some of the linkage is missing..and as I said I cant tell without SEEING what you have done. Or the paypal account itself is configured wrong to accept standard website payments. Make sure in your profile you have unchecked the encrypted buttons thing
I just went to the teddy bear site, and added to cart just fine.
Karen