I'm not like the fandead members who felt betrayed by mikeneko being formerly married as most of Millie's fans actually want her to have a boyfriend or get married already. Personally I do too, first because she deserves a stable relationship after her previous relationships failed (including her exboyfriend who was first doxxed on kiwifarms and when that kiwifarms doxx was posted on 4chan, said ex boyfriend deleted 75 of his tweets and photos on twitter that had Millie in them, he also was a pomie as one of his recent tweets posted his laptop with a sticker of pomu), and second because I'm tired of her bitching about being single.
As to her being friends with Elira, that's something that actually leaves a sour taste in my mouth, but I still mostly believe she's mostly innocent. I mean if I were to believe her words, she and Enna joined Nijisanji without Elira knowing about it, meaning they didn't get it because of nepotism.