>Ashley didn't communicate this
Yes, you can presume that any lore that I tell you has been reasonably discussed between you all and theorized if not feasibility founded in knowledge during rest times and dinners you've shared. So at worst they know she will resurrect and by similarity they can presume Ashley's energy allows the same revive mechaic that Yulya is using but since it is not "wild" by default it needs her to actually die and not just be knocked unconscious.
The players can't here me but they do have a memory of Ashley's last level up and that has been communicated because I said so. The players know that Ashley is immortal and will remain herself until her body is completely destroyed but they also know something will occur if she dies and they also know because it has been communicated that by her that the mechatherial goddess will use Ashley's form for an undisclosed period of time upon her dearh. In fact they know that Ashley will be in the ethereal plane until she is formally revived and the mechatherial goddess will have control of the body because though Ashley's soul will be pushed out, the mechatherial demigoddess' soul has a connection that can't be pushed out. Reviving, it is theorized, will call Ashley's soul back to her body regardless of its condition if at least there is some living flesh left.
So your in-game take is flawed here.
Cat can think for herself. My host has a saying him and his workmates go by, better to ask for forgiveness than permission if what you're going to do will get the job done.
You are two puddles yes, but with a motor function in human form that will be penalized 5ft movement until you are treated.
Yulya may have an opinion or keep quiet and let Cat decide but if a TPK occurs here, you are in two pieces and will remain such until someone slops you back together. Otherwise you are out indefinitely, and no independent motion of the two at this point, you are fully unconscious until helped.
In less than a minute it is very likely that Cat will be out, in a minute and 6 seconds, Yulya will follow and the bugbear will be allowed to decide your fates.
I believe Cat will make the right decision, whatever that is. You're not the boss of her.