But, he probably would seduce a lonely girl without family or a friend in the world. Likely he didn't even know why Rodolphus ordered him to get Rosalind pregnant, but it wasn't a hardship for him to comply. Maybe he even believed what he told her that day in The Three Broomsticks that it was an attempt to have more power on the Wizengamot in their hands. Though Rabastan had a lot of faults, she struggled to believe he would willingly offer up his child, even unwanted and illegitimate, for sacrifice.