Actually, the problem is probably that she isn't pressing the middle button on the right one.On the V6 select Others.
On the V5 select V5.
When both are at the Stand-by screen, point their tops together and press the B (middle) button on one of them.
You may often get a connection error if you try to connect them in a brightly-lit place. Shade them, or move to a not-so-bright place and try again.
If you still always get a connection failure, press the Reset button on (the back of) one Tamagotchi then select Download from the Download / Reset screen. If the problem still occurs, do the same on the other Tamagotchi.
If the Download / Reset screen suddenly appears by itself on one of them when you try to connect, select Download. Then, install a new CR2032 battery into the one that screen appeared on, before you try to connect them again.
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