Honestly, that seems... fine? Like, she just did it to get pregnant, and she went back to her husband and raised the child with him right after. Like, yeah she liked it, but she's a grown ass woman. Of course she's gonna enjoy the sex. Like yeah it sucks her husband couldn't get her pregnant and she went and did stuff with another man but eh, you know, do what you have to do and all that. Resolve, determination, it's what anime's all about!
I mean unless the text says some shit about how she actually doesn't like her husband or is still fucking that guy or somethin, then whatever go to hell bitch, but if not then ehsallgud