That would be all fine and dandy if you had passed the Intrusion check to not be seen... as it is, you did not. Myraline gestures toward you and begins to influence the crowd to move out of her way, and with the Wing Guard flanking her there is not a whole lot of opposition to her will. She will be upon you in moments if you keep trying to push your way out.
Away from Myraline!
She still wants to try and get out of there, but at the moment the primary concern is escaping Myraline. She's going to get away from this crowd and try and find side corridors to lose Myraline and the Guard, and then she'll go back to the maintenance shafts. If she can go lower, then she wants to do that, if not she's going to make an entrance to the hangars and either sneak aboard a ship or intimidate someone into letting her on.
Heh...yeah, Rianna's well aware that losing Myraline is going to be very difficult to do...
Rianna will dash back to the nearest entrance to the maintenance shaft, shutting down her lightsaber as she ducks inside. From there she wants to make her way lower into Cloud City, hoping that she can get enough of a lead to get away more easily.
You duck back into the maintenance shafts, then, with Myraline in pursuit at a distance. Myraline is not as agile as you, and you are hoping that she will get tripped up among the extensive piping and mess of wires that network the maintenance shafts.
And yet, you sense her rapidly closing behind you, and surge of power in the Force...
Yeah, Rianna's definitely hoping for that indeed.
If Rianna can make it harder for Myraline to catch up by creating more obstacles doing things like slicing down pipes to block the path, she's going to do that as well, unless it would slow her down as well, as Rianna knows she can't stand up to Myraline with the Force, and does not like that she can sense her closing in on her so quickly...
It would be Lifting to defend against something like this.
As it is, the lightsaber is not aimed at you (as yes, you assumed correctly). Instead, the blue-bladed weapon whirls past you and skims across a pipe, cutting it open and pouring boiling hot steam into the maintenance shaft, and directly onto Rianna! She certainly gets burned by it, and trips over some wiring as she attempts to get away from the venting pipe.
The shaft fills up with steam quickly, making it much hotter in here and also preventing you from seeing much of anything in the already dim shaft.