I would first find out if the fluid is harmful. They usually supply you with an 800 number or if not, atleast the contents of the liquid. I would take it seriously, but not over react. If you find the substance is lethal, then by all means take Ms. Sally to a vet ASAP unless you are sure it hasn't seeped into her skin.... But the first thing I would do is to identify the liquid.

Keep us posted.