It's always hard for outsiders to judge what another person wants without asking, so keep that in mind when reading answers to this question. Only she knows for sure what she wants.
That being said, it does seem like she wants you to get in touch with her. If there was some sexual or romantic "vibe" going on between you two before this exchange, it seems fairly safe to assume that that is why she wants you to get in touch with her. If I were you, and you are interested in her, I would give it a try! And as for me personally, I wouldn't have left a note like that unless I was interested.