Yeah, on the other hand, it must be nice for her to have your visits and help, if only because being a new mom can be lonely and it is so nice to have a friend who's willing to stick around and hang out.
Obviously, Sven isn't going to be as involved as you are, but that is not an expectation or even a hope of mine. My main ambition is that he won't drop me as a friend. I might even email him during that post-partum period and say: "Hey, do you want to come over for coffee? I need adult time."