So, in the Marvel Strike Force game, Deadpool and Death had a baby, Deathpool.
Mortem With a Mouth
https://www.youtube.com/watch?v=Yy9fwUjnWaI
https://www.youtube.com/watch?v=vOZBC1GcEyc
Ok I can imagine this taking place in an AU, but I wouldn't put it past Marvel for her to pop up in the prime universe.