you were trying to get too close with the gifts.  I don't know what you gave her, but you may have been, as you said it, very "overly generous".  I do give my dates a gift, candles, but they are very reasonable priced.  I normally do not send them a follow-up email after the date.  They have enough emails to look thru for potential clients, they don't need to be bombarded with thank yous.

Swim

....an that if you put pressure on her you won't be as receptive to you.
Also, did you ask her a question in the email therefore anticipating/expecting/requiring (keywords, differentiate) her to respond.?....jus sayin
First rule of thumb....Never assume any females actions or lack thereof necessarily pertain to you...aka: not personal/doesn't pertain to you.
She's just taking a few days off then she'll play catch up....decompressing is a must or us Hookers, k

Mix it ip a bit and see a different Provider the next couple of times....helps keep things in perspective.

Happy Hunting!