Pick a word, then add a photo of the real thing (her cup, 外婆) or a sound file of you saying it. Record with your phone's voice memo app, then choose the file here. Your sound plays instead of the computer voice. Ask 外公 and 外婆 to send voice notes too: hearing their voices in a game can make Chinese with them feel like play.
New words go into a 我们的 "Our things" group, and into the Find it game.
Photos, sounds and new words stay in this browser on this device only. Nothing is uploaded. On a phone or iPad, use "Add to Home Screen" to open it like an app. Short sessions together work best: tap, say it with her, and play.