Advice on exclusive

Question- I had an agent request a two week exclusive on a full last week, which I sent via e-mail per her directions. I obviously couldn't grant the exclusive as I have partials out already, which I told her, and she said to send it anyway, asking me to hold off on sending to other agents until the two weeks was up, and I agreed. However, I asked in my email for her to please let me know she received the attachment (in the past I've waited a whole 8 weeks for an agent to respond on an e-mail sent partial before finding out she never received it)...not a peep (sent it on Wed. last week, but this agent has returned emails each time within a day). Should I send an email checking or just sit on my hands and wait? I don't want to be the "did it get there" girl, but I also don't want the exclusive lasting forever, either, as I've gotten another request since then. Thanks for any advice. And before you say it, yes, I know I'm paranoid!

Thanks, maestro. Yes, I definitely know I should not badger her...but since I asked for confirmation and didn't get one and I recently had this same thing happen and the agent really hadn't received my materials, I'm a little concerned. I think I'm going to sit on it another day or two and if I don't hear, then I'll ask.

I still wonder if the reason the last one got "lost" was because of an aggressive spam filter or something...I mean, I put in the subject Requested Material with my title, but I guess you never know.