I have to agree with those who suggest you respect her wishes. I love Karen's idea of buying or making something for the office though - some little thing to display that shows that she has appreciative clients. At my vet, there is a very cute crosstitch picture of kitties that hangs in one of the exam rooms - and it always makes me smile because it refers to the "catdad" side of him

Jen you are very sweet to want to help her - but I really feel that it would be awkward in a professional relationship. I bet you could come up with something cute from the gang.