I agree that some sort of explanation is good for behavior like that. I just think the way it was done really puts a big bump in the road.
You think you're going on a regular sexy mission, then BAM, child abuse for like 10 minutes straight with no way to end the event or speed it up.
There are several ways to have the same effect while reducing the impact and interruption: shorten the scene (once we know she had it rough we don't need extra details to be extra sad); give us an option or warning so we know what to expect; or give us the option to skip and review the scene later.
As it is now it really interrupts the funny, sexy, light-hearted vibe. It's just out of place IMO, still makes sense to be involved though.