I'm trying to figure out if you're serious.
She knows you have her number, but you misplaced it. You want to know whether or not you're "allowed" to go and find it again. Personally, I would, but I would never ask about it! I'm afraid for you. I'm guessing you think being a DJ is about adhering to a strict set of rules. This is not true.
In which case, you need to re-learn and re-learn well.
Nick