awkward

I already bought a gift for the "Adopt A Family" at our church.  I did sign up to shop for presents that were missing for the wish lists.   I was called to buy 10 gifts (sweaters, jeans, sweatsuit pieces, etc.  I bought them, wrapped them and delivered them.  No one mentioned reinbursement.  It came to nearly $200.  I didn't know what to say.  I feel so awkward.  It's more than I planned on spending.  I hate to call her.  I guess I will.  If she assumed that I volunteered to do ....then I will leave it at that.  Just awkward...