Elisabeth Bell has designed stamps for a few different companies including Whiff of Joy and Sugar Nellie/Funky Kits. Could it be this particular stamp which is at the Funky Kits website (under the Category of "Sugar Nellie"):
Angel Wishes There is also a boy with a dog in this particular category too.
Here is
Elisabeth Bell's website where you can see alot of her designs (if that is of any help). Click on the LH Menu headings and you will bring up lots of lots of her designs.