So maybe Brenda "adopts" Aiden and she obviously doesn't know who the baby belongs too

So IF Franco takes the real Aiden
Hells takes who? cause isn't she supposed to take him as well.

My thought is this....Hells takes Aiden and replaces him with "another baby"
Franco comes across Hells and he takes Aiden from Hells, knowing it is Liz's baby
He takes it to Rome
So Liz says the baby is NOT hers and no one believes her
Franco knows she is telling the truth cause her baby is in Rome
So Franco tells jason "he knows where the baby is" ..

the big decision will be , what does jason do about it?
will he help Liz against Sam's wishes?

maybe that is the HUGE RIFT that jaho were supposed to face
Jason once again befriends Liz and it sends Sam over the edge again
then wham Brenda comes to town ..
with a huge secret....where and how she got the baby

I just didn't see them sending Brenda back to town with a baby ?

wonder if Franco and her were the 2 raising Lauren and this was to replace THEIR child
Brenda left PC pregnant with Jax's baby
she met Franco
they married and raised lauren together
she died
franco targeted jason and pc cause him and brenda split up after the death of lauren
franco takes "aiden" and gives him to brenda to get back what they lost
franco heads back to pc and "dies" or really escapses
brenda heads to pc with aiden cause she is afraid of franco and thinks pc is safe
brenda has NO IDEA Franco has even been in PC let alone doing what he has been

that would be interesting