You can only go with the mom if des doesn't come over to the sleepover and you ask the mom to go. If you are not going with the mom then by default the next day you will ask des to go. Evaline you can ask regardless so long as you are going and helped her cheat.
If you played it and were supposed to go with mom and went with des instead let me know because that means there is a bug somewhere and I'd like to fix that before the mom update.
Oh no, it was during my Evaline run.
I invited Eva to the party when I got the option. When I got to the party Des was outside. I hadn't invited her home so she hadn't met Rebecca or heard of the party unless I missed the part where Viv invited her.
I'll have another look through, I could have blanked that part of the conversation I just don't recall inviting Des to the party during my Evaline paythrough. The only bug I had was when I had the meeting with Rebecca, Eva said she could smell sex and acted hurt regardless of whether i'd had sex with Rebecca or not.
Well, on the save where I did have Viv accept sex with Rebecca, Eva acted hurt until Viv said it was Rebeca she'd fucked, not Des then she was no longer hurt.
On the flip side, the save where I had Viv turn Rebecca down, Eva still went through the same dialogue as if Viv and Rebecca had done it.
I also take back wanting Viv's mother to move with Rebecca to the new people.
I didn't realise she was high up in organised crime until I did the reporter bit.