Bunny,
Normally, a boundary would definitely have to be set and enforced here.
However, your STBX is clearly a totally boundary-less person.
This must be tough on daughter. But she is learning the truth the hard way, by observing her father's totally self-centered, deceitful actions.

Gardener

"My soul, be satisfied with flowers,
With fruit, with weeds even; but gather them
In the one garden you may call your own."
Cyrano deBergerac