Explain to her that it's not false hope...it would be setting a standard that you want the kids to be able to expect...that no matter what, Mommy and Daddy are still a force to be dealt with as one parental unit, but more importantly Mommy and Daddy are still the two people on earth that will f**k up anything or anyone who tries to hurt them.
No matter what happens if they know you two are still a team for them, they will be better adjusted.