well i think u are wrong, this is what i think:
Cibo wanted to see the Net no matter the price was ( thats what she said), so she made the 2 folded connection, and when Davinel has been killed off by Domo, she connected to the net, ( the safeguard was surprised that it happend, and when Cibo downloaded lvl9 , it said that her memories will be removed ), then lvl9 started growing in Cibo's body, btw Seu wasnt a NTG carrier so his genetic Data was useless only B/c that was a special level normal ppl without NTG could connect to the Netsphere thus Davinel could use it to connect to the Net.
The most important is lvl9 formed inside Cibo body, to be honest it was another Cibo without her memories ( she changed bodies many times 6 or 7 ), but somehow she knew that Killy wasnt an enemy, she killed Domo and fixed Killy's hand, anyway after being shoot by Killy and a sec later by Pcell she activated her Ultimate Weapon and completly destroyed the level, then we see her enters the next level of the structure through the hole propably after many years and many battles thats why she looks so tired. Sanakan finds her and as u said, seems she impregnated Cibo, so it will not be a child of man and woman but human and safeguard and this way has the NTG ( this is not a child of Seu, even Sanakan said that this will be a child of her and Cibo nothing about Seu).
One more thing u said:
"sanakan says something about her baby and in a flashback cibo remembers seeing a representative of the government telling her something before she died which was that the sphere contains an embryo of two women. "
i think u are wrong, it wasnt Cibo's flashback, well, the person in the backup space is ... Morii, its not Morii ( morii was the company name who made the preservation pack) we dont know the true name of that person
The girl says, in the same page of the guy form the GA: "A representative of the governing agency retrieved me from an emergency preservation pack...". So, first of all, the girl was in an emergency preservation pack, probably the same one that we see around her neck, identical of Mori's (probably a direct reference of her being Mori).
And at the end of Log 60 the GA talks with Killy trough Mori, what indicates that they know of her existence, what implies that later she could be retrieved by them.
sorry for my english i hope u get it ;]