Fuck no, the whole point of Big Mom creating Hera was so Nami could get Zeus. It would be so stupid for Big Mom to create a new homie only for Nami to take that homie away, we also don't know what Hera is like in terms of personality.
At least with Zeus there was buildup for Nami to have him, but that's not the case with Hera since Hera was just recently created.