However, you can definitely do it and pull it off with a little luck. When you approach her : [substeps] Stand straight with good posture.
[header] How to talk to a girl that you haven't spoken to in a while [title] Approach her in person. [step] If you happen to run into her in a public setting, you can choose to simply walk up to her and start talking to her. This by far the most direct approach, and might take some guts.