Wait till vacant or show while occupied?

[Karen P.]

I would love to hear any opinions on whether to show a unit while it's still occupied or wait till it's vacant and already cleaned, repaired and ready to go? Especially, when dealing with an unpredictable current resident? 

I have one of my duplex units coming available at the end of this month. The current resident is leaving because she is furious that we are raising the rents incrementally on her and asking her to pay late fees.  We inherited this resident and the conservative market rent on her unit is currently $135 more than what she is paying! So I'm not sad she is leaving.  But, I've never shown an occupied unit before. 

I listed the duplex and I am getting calls, but she is being uncooperative with setting up showings.  I'm thinking I might just delist and wait till she's gone. Thoughts? Opinions?