it is difficult to tell at times - many straight womyn just like to use intimate language, on the other hand many who claim to be straight are either attempting to come out or they have decided they want to experiment.
Your best bet might be to just try to be friends with her for a while and see how she continues, if she starts touching a lot more and the language really gets intimate you can try asking her out on a real date.
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?The first duty of a human being is to assume the right functional relationship to society--more briefly, to find your real job, and do it.? - Charlotte Perkins Gilman
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