The way I see it: Girls like assertiveness and you have no right to complain about her not coming after you until you show you are into her and want a date. Not just some slimy, bet-hedged lets meet up with mutual friends or a bunch of my friends, just an actual meet up with it clear you are interested in meeting her.
After that, if shes lukewarm, she's can make up her mind but being a puppy dog and messaging all the time won't help. If she's into you, she will just message.
Problem solved, shit or get off the pot, and no time sitting wondering whats going on. If she doesn't know you are into her, you can't expect her to go out of her way necessarily esp when you are some random and she probably has plenty of friends to message, but after you let her know that you are into her, if she's into you, you will know it.
This is old bull-young bull shit - the kind of thing that doesn't change with new technology and generations.