did you have children with your ex, if so it is appropriate pay your respects to them. if not it is a judgement call depending on the relationship with your ex, i find it hard to believe she would be upset at you for going but i would limit it to just the wake, if they have one.
I wouldn’t, not with that length of time, you haven’t been in her life. It may be different if you didn’t have an ex, and you don’t know how she, and the rest of family feels about you showing up uninvited. Leave them to their grief, and you can send a card or note, and perhaps visit the grave later, to pay your respects.
@Barny52 well she will be upset whatever on the day and that is natural but you are paying your respects but rather than cause any more upset you could just ask if to attend to pay you final respects or not
It depends on the relationship you had with the MIL. One of my friends became really close to her MIL and that never changed, even after she divorced the husband. She attended the MIL’s funeral and kept her distance from the ex.
SW-User
if not invited, ask someone adjacent to the ex or the ex themselves. otherwise send flowers