That's right. There's an exchange of memories when you meet, which is how I have her memories to begin with. But otherwise you can still physically exist within the same worldline together.

[ Even though the sequence of seeing a foreign set of memories does stagger and throw you off balance for a good moment. ]

We weren't in the position to fight so we had to retreat at that time. As an Outer God, she has less freedom in the < Star Stream > so she couldn't readily follow us through a portal.