Recs

Try

This Witch of Mine (i barely remember this anymore but I do know it kind of deals with grief)

Deals w grief but may have different vibes from those two.
https://www.mangago.me/read-manga/my_dead_husband_won_t_stop_bugging_me/ xhusband & wife
https://www.mangago.me/read-manga/false_child/ xdaughter & mom
https://www.mangago.me/read-manga/goodbye_mom/ xmom & daughter
https://www.mangago.me/read-manga/mouth_to_mouse/ boyfriends
https://www.mangago.me/read-manga/death/ brothers

One more https://www.mangago.me/read-manga/natsuyuki_rendez_vous/

Thanks !!