Not everyone immediately partnered up with Sabretooth the second they caught whiff he was alive again in Hunt for Wolverine to put him back in the grave though. She was obsessed with killing him quite consistently throughout Jubilee's time with the X-Men until relatively recent.
I'm wondering if maybe there is some history between Lady Deathstrike and Aunt Hope, with them both being cyborgs. Of all the dangling plotlines, this seems to be a curious one.
Yuriko ain't just reuniting Jubilee and Hope out of the goodness of her heart. (She's not acting out of bitterness either, clearly... She could have sniped Jubilee WAAAAAY back after Jubilee helped Wolverine escape.)
No chance the guy Jubilee was dating from that mini shows up is there? He hasn't been seen since, has he?
“After all, it could only cost you your life, and you got that for free!”
~*Earthbound.