How much do I need to panic?

[swils]

So here's the deal. I visited Simmons College the Friday before last, and met with their admissions rep. During that interview, she said that I could extend my decision deadline, if I needed to. Knowing my incapacity for decision-making, I told her I might take her up on that.

I emailed her on April 12th (kind of last minute, I know) and asked if the offer still stood. I haven't heard back from her, and now it's the 15th and the school is closed until Tuesday. I'm trying to figure out if I need to make a decision pronto, or if it will be okay, since I had this informal, verbal agreement. So far the school has been communicative and helpful. The other schools I'm still considering are giving me until April 25th.

Any thoughts? Gah.