Don't know if this is answering your question, but to summarise, the last few chapters were of the reason why shuli died, how she died and the consequences of her death from the past.
Regarding the kids' behaviours, they were always like this, both in her "present life" and "past life". The only difference was they hadn't cleared their misunderstandings, and therefore, weren't open/direct with one another. Resulting in Shuli believing that the kids didn't need or want her.
Though this is what I understand, if I'm wrong... well, my deepest apologies. ლ(´ڡ`ლ)
No, your right that was a good explaining (づ￣ ³￣)づ
and @Athy-Obelia - yes I appreciate it, thank you... so it is a flashback of sorts anyway... and I guess before we had her view of the kids' attitude towards her which I guess we see now wasn't as extreme? that might explain their "different behaviour" and make it have sense as a flashback as if she really died it kinda would make the series end here (also confused by the Epilogues if it's just season 1)
couldn't understand how after all the changes she was still being asked to leave and not attend the wedding... also the calling her "cold" and "spider" etc... so I thought perhaps they were flashbacks, but the kids' behaviour is the "new life" one so it's not flashbacks and it all happened just the same? like wtf was all that for? I don't understand T_T