Most Helpful Guy
Anyone who says NEVER initiate contact has no idea what they are talking about. Don't listen to your sister, I doubt she knows what she is talking about. Just initiate contact. Think about it, you like a guy texting first.. why? Because it shows interest. Why would that be bad/different for a girl texting a guy? It wouldn't, in fact the good feels would be magnified because this NEVER happens to guys because people who talk nonsense say to NEVER initiate contact because they be dumb.
Most Helpful Girl
I believe you should initiate this time. It's not a big deal.