I'm in a number of mum social groups. Another mum with whom I was initially close but over time we've drifted apart is also in them. She rarely, if ever, makes an effort to meet up with the rest of us despite always knowing what's going on. So most of the mums aren't very close with her either. This is particularly true in one of the groups, in the other group she tends to make more effort but I'll explain why.
She is always negative about things, starting off with things to do with the kids, schooling, nurseries, money, you name it. She has a major status complex because she's from a poor background, but objectively did pretty ok for herself and I think if anything, she should be proud. No university education in the family and she is seeing herself as lower to the rest of us though which sometimes results in her being pretty snappy. Again, it's not anyone's fault that she has a complex - all groups are very welcoming and include a mix of mums.
Her contributions in the groups are often stirring the pot (cue Daily Mail type unjustified rage at issues that based on what she says, she doesn't quite understand), or confusing others because she didn't bother to read the messages in full.
Most annoyingly, she chips in with neither here nor there comments on issues that are not relevant to her or her DC. She commented on our friends' school choices (in a different location) and moaned about her DCs' school (I know the teachers in that school and what she said isn't true). Another example of her feeling inferior and there really is no reason for it.
She comments on kids events other mums attend even though she can't make them. She sometimes comes across as if she was desperately clinging on to some other mums because she thinks she can get something out of them. I know from spending a lot of time with her previously that she only makes time for people if it's of interest to her - ie if they can help her somehow. However, some people see through it by now as her and her partner have mastered the skill of playing the system (they pay less taxed than they need to, got help and various freebies fraudulently etc.). I don't want to be associated with her as we don't share the same values and I've removed myself from her close social circle a long time ago, but her presence in these groups and her constant social climbing attitude and stupid or negative comments are really wearing.
What can I do? Shall I keep ignoring her constant comments? I can't do much else, can I? There are multiple group admins, but I'd never ask anyone to cut her out or remove her myself, however tempting it might be as it's been a long time. I don't have time for this tbh but really would like to remain friends with the other mums, so I can't remove myself either.