I'm a single guy that lives alone. Almost all of the women I've seen know it's okay to break up my day with a text or call. It was a text and I did ask where she got my number but she didn't answer. As a matter of fact if you're a provider and have the ability to get my number call or text me anytime (not too late). Doesn't not matter if we've met or not. I'm so spontaneous and unpredictable, who knows. With me there was no harm no foul. Some guys it could cause major problems, Hopefully who ever gave her my number told her I was a lonely old fuck that spends his days talking to his dogs. One of them is so old he and I have been together longer than my two marriages combined.
Please note: I go to bed pretty early. A very suggestive text is probably your best bet.