Direct is best, don't dilly dally, give her a time and place and what you propose to do, if shes' into it you'll know, if you take control of it show you lead, and shes willing to follow your lead theres a good chance shes vibing already

if she proposes a change of date or venue, cool still some interest but might just be a flaker

If she says anything but yes, like maybe or i'll think about it, take it as a no and move on, you're a busy guy with options, and on to the next rejection. lol Will take some getting used to, but you'll survive