GBA Tan could be seen playing with her own Game Boy Advance, She had a HUGE collection of Game Boy Advance Games.

...Hmm...I sworn I could've backtracked to find the item room and...

She noticed that you were watching her play Metroid Fusion.

...Heya! She smiled at you.

I'm GBA Tan, And if you wanna know anything about some old games... She winked.

...I'm your gal for the job! She smiled while flashing a thumbs up at you.