No, she should exist in more than two time periods because of the presence of one consciousness in more than 2 time periods and I have explained, how. And even in Squall's present her consciousness is still present at the end which is needed for her plan. Her consciousness in her own body, her consciousness in Edea/later Rinoa and then because of Ellone's ability the consciousness in even more time periods. You think her abilities are that limited. But they are not. She can somehow connect her consciousness with a time period where the powers of an already dead Ultimecia existence was given to another woman and control many more witches in the past, so many Edeas/Rinoas when they got the power of another dying Ultimecia. And like I said, there is still Ellone's ability. Ultimecia combines those powers to transfer her consciousness and cause the paradox of them being past, present and future at the same time (short: she just uses manipulative powers to control time). Whether this makes too much sense or not is not relevant. It does in Final Fantasy VIII's universe since Ultimecia wants to use many abilities to control time completely. And that is all which is important about it.

When Ellone send Squall's consciousness into the past Squall's consciousness no longer exist in the present.
We can see Squall's consciousness resided within Laguna in the past.We can see Squall's mind in Laguna's.
Squall's body in present seems to be sleeping and there's no consciousness.
SO there's no way Squall's consciousness exists within two time periods at the same time.
The same is true for Ultimecia when she was send to the past.


It is. The entities are connected to her alone since she is the only one who can resist the destruction via time compression. She is the one who does not erase the existence "Ultimecia" because she is immune to it.

So you are saying all existence will exist within her?