What supergirl comic is this?

[ocean djinn]

I remember reading a supergirl comic (at least I think it was a supergirl comic, it was mostly about her) and I can't remember what issue it was. It looked relatively new and it had super girl go to an alternate future where some alien parasites or ghost or something had taken over almost everyone and superman is trying to resist being consumed by them. Then there's another scene where someone fills up her room with flowers ( I think is was superbly or someone like that). There's also a part where they have to fight some people that ate the flesh of a merperson and become one or something like that. And if none of that rings a bell I think there was a panel that had supergirl kissing powergirl as an apolage for leaving her in a bind


If you know anything at all about this issue please let me know