I do feel sorry for AE but I equally think she needs to get a grip, get off SM, think of her poor girls and book herself into therapy ASAP.
IMO, AE has devoted all of herself to IG, to try and make him happy, please him and feel secure that he loves her.
AE is quirky and I definitely think that was part of her appeal to IG but as his profile increased, I think he wanted her to tone down that quirkiness and tow the line.... I think this is why she comes across as awkward and odd in some posts/videos as it's not something that comes naturally to her. I'm sure he would have "told her off" for embarrassing him at times (I don't mean physically or anything) scold her if you will.
I think this will have had a detrimental effect of her self confidence and her need to please him.
This is turn, probably pushed him further and further away. A vicious cycle of AE trying to hard and IG detaching from the relationship.
AE is the definition of a woman scorned at this time and I do feel for her, that her whole life has been turned upside down. IG is just waiting in the wings whilst she unhinges herself on SM, it's not a dignified silence, it's biding his time, whilst AE causes merry hell.
They are both to blame for this chaos and it's the daughters I feel so sorry for, caught in the middle, being told who knows what.
AE get off SM, protect your babies, put down the bottle.... Get to therapy. Work it out privately, be the bigger person.