Delia, admittedly, doesn't know Natasha that well, but she's been around people in general enough to read tones of voice and body language. Important aspects of being both a pirate and diplomat, two entirely opposing jobs, both of which Delia's held.

Everyone will have to find time to talk, later, when all of this is over. Delia herself has been focusing on what's in front of her, one step at the time, one action at the time.

And of course, the extremely long, and hot, shower she's gonna take when all this is over with.

With the Black Widow's help, however, Delia will find those life sign signals soon enough.