Ashley's hilarious..

I mean if my abusive mom suddenly became nice I'd freak out too.

I would cry for that too. ╮(￣▽￣)╭ She has no real family and probably feels excluded at times.

Idk what people expected her to do? She’s like a literal orphaned child.
Was she supposed to challenge Mildred to mortal combat?
Drown her sorrows with the bros at the strip club?

In the first few chapter there were no signs of her being abused, even when she made mistakes her sisters were asking if she was alright. It's clear that she tends to over exaggerate when it comes to most things.

And I don't think having more guys to dance with than your sisters is something to cry about? Unless your trying to be sacarstic to them.

On the first chapter MC says that the memories she received left it obvious that the original Mildred was already using her as maid before she transmigrated, and that she already disliked Ashley a lot, and probably let her know she was a burden openly too.

We never see it because this novel is told from the MC's point of view, and when the MC transmigrates she works fast to try to fix the situation, but who knows what sort of situation the stepmother had already made Ashley go through.

Besides that, there's the whole situation about her losing her mother young and then her father too to boot, and she's still really young. Her only family left is her stepmother and stepsisters, so she's trying really hard to fit in and please them, and making her sisters lose the spotlight is something she didn't want to do.

So when she sees her stepmother in a bad mood the next day she overthinks it and believes it's her fault, which says a lot about her own self-esteem.