What is Lin's relationship level? Every event should tell you what to do if it's ready at their door. But when in doubt, you can always check the Wiki / Guide linked to on this page.
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Lin is at level 26 and I have the talk option at her door but when I try to do it, it tells me "I should raise Android's relationship level". I cant's do the Sylvia quest because of that and the Autums quest is also stuck. I just don't get the option to level up the Android since the talk button doesn't pop up.