We have been flirting touching and all but she goes cold when I ask for a number...

she wants you to flirt but she wants full control... who knows maybe she has a partner and doesn't want you calling her cell because that person will know she's talking to you, I think you should keep note of this strange behavior, not that you shouldn't pursue her... she is obviously interested in you some what..

. ... yup

Hmm... I can't tell if she is playing game or she is the one who likes doing the chasing, see back in the 1950's people were taught the men should do all the chasing but quite honestly I observe and learn from both my own sex and males and both males and females can be very dominant, both males and females like to be challenged not just men, so if she likes the chase why not give her that challenge? :), she is obviously a very dominant woman though that's for sure so let her be that for a while and see where it goes.

A bit old to be playing games. She is nuts.

She just wants the attention

Let her do the chasing a bit. She seems to miss you when you leave her alone so be friendly but let her be the one to chase.