Seriously dude? You can do anything, anything could happen.
Id text her something like "OMG I just met your twin"
or, a personal favourite of mine, you could text her nonsense, some examples:
"Hey, do you know if they have Burger King in London? I could really use a Whopper right now"
"Who dis?"
"What is your opinion on LIZARDS??!"
any descriptive commentary on what is happening around you in your life also works a charm...
for example "wow was just driving along by the harbour, watching the sun set and enjoying all the reds and the purples and the yellows flow together in the sky.....made me think of you"
Or you could fuck with her a little bit to punish the flake:
PUA: Hey, I have something we really need to talk about....I really dont know how to say this, but i figure you should hear it from me first
HB: What???!
PUA: Are you sitting down? You should sit down for this...
HB: Yes! what is it....
PUA: Im really shocked this has happened, but feel its my responsibility to tell you. I just dont really know how to put it into words...
(By now she is really freaking out! she will think its something to do with the encounter you guys had, maybe she gave you an STD, maybe you realised you had an STD and needed to warn her she needs to be tested, or something like this)
HB: OMG just tell me...im getting worried!!
PUA: The price of baked beans has gone up by approximately 7c per 100grams over the whole country!!!
HB: OMG you asshole you scared me so much hahahaha
Boom! - Neg delivered, HB taken on emotional rollercoaster, you have had fun, she is broken out of her auto pilot programming!
any of these tactics are suitable and will give you the edge in reviving a "dead" interaction, the main goal is to get a conversation started, and remind the girl of the reasons why she liked you in the first place.
also check out Jeffy (RSD) sad sad crying karaoke phone message if ALL ELSE FAILS! haha....
CHAT
ty