Tough one.
Running away is dumb considering we didnt do anything bad, on the contrary. Not an option like Yula said.

Option1: Ashley runs
They could just hold us until Ashley returns with her 'id'. Not good.

Option2: Ashley confesses
Well Yulya will be in trouble too if out yourself as fake cleric

Option3: Charming the guards. blaming driver
First part sounds good but I wouldn't blame anyone.

Option4: Ashley the cleric of the undead
Sounds fishy and the problem is you arent a cleric and this can easily be checked. And they will if you come out with your undead.

Option5: Throwing Yulya under the bus
Again blaming somebody. Doesn't sound convincing