I did that to Laura once. I didn't have her phone number and her email bounced. We'd just moved back to AZ, and I wanted to contact her. I knew where she lived, so I just showed up. But it was just me, as it was before I had kids, and I only stayed a few minutes.

So if she had no other way to contact you, I can see that. But if she has your email or phone number, than this is nuts.