All of the above is wonderful advice .... if you've developed a somewhat personal relationship with her as well, you might think of sending her something like a muffin basket, or bagels or something along with a thank you note for all her extra effort, sorry we had to go with someone else, but will keep her and her company in mind for future opportunities ... The personal touch is always what lingers for me ... even when I've not gotten what I wanted. best of luck in your new venture!