Play minecraft on tablet and pc?

My cousin is visiting me at the moment and we wanted to play minecraft together. She has the pocket edition and I have the pc version and I wanted to ask how I can play with my cousin ne whether that is possible

"PC version". There are 2.

Java and Bedrock.

Pocket Edition hasn't been around for about 3 years and a PC version never existed. If you have Minecraft, and the Pocket Edition has been updated and that's why Minecraft is actually meant, then yes, then you can play together. But you probably mean the Minecraft Java Edition with PC version and then of course you can't play together, because Minecraft Java is not part of Minecraft and you can only play with each other within the respective version.