As soon as you finish talking, write down EVERYTHING you know about her on your phone. This could come as a draft text message or as a recorded message. Just write it down somewhere!
“Why write it down?” I hear you say. Because when you call/text her, you won’t sound like an ass because you’ve actually got something to say. For example, she may have mentioned an activity she enjoys or she may have talked about her weekend plans. Remember both and that’ll be a massive tick in her books.
Now an extension of this tip will be very handy for when you’re speed dating. Breaks and speed dating don’t go hand-in-hand, so instead, think of a nickname that best describes her. For example, I would call her ‘Ms. Indecisive’ if she spent the whole speed date deciding whether or not to sit down.