>>36496087Just be honest with her and tell her you were exaggerating, but that you want to get back into Pokemon. Provided you actually do, and you're not just lying to get in her pants, then she'll be happy just to talk about her interests.
People who are passionate about something tend to want to spill their guts about and teach others who are eager to learn about it. They also tend to think that someone paying attention to them rambling about their hobby makes that person a good conversationalist.
Conversely, if you're just lying about being interested and don't actually give a shit about any of this, you're probably just going to disgust her. That's all assuming this isn't bait in the first place.