Poor little Gigi being taken from her mummy that early - I'm so glad she has you for a new mummy. I'm not sure about the food as I haven't heard of the brands, but with the hissing it sounds like she's just asking Scout for a bit of breathing space until she gets used to everything. Good luck. Himalayans are stunning, and apparently love water. I was grabbing some cat food at the supermarket once, and the checkout lady told me how her Himalayan swims in their pool when she is allowed to!