I feel obliged to point out that Harper never said she wanted nothing to do with Eliza. Tane went behind her back and told Alf and Roo to keep Eliza away from her like a heavy Victorian patriarch. Alf, being something of a heavy Victorian patriarch himself, falsely attributed the words to Harper, because god forbid she be allowed to have a different opinion to Tane.
Anyway, that's it for Eliza it would appear. Harper tries to soften the blow by saying she'll only be institutionalised for "the short term" but it's hard to imagine her suddenly being all cured of her destructive impulses in a matter of days or weeks. At least she's not facing criminal charges, but other than that, she's likely to end up on the same ward as Heather. Some questions remain unanswered but I'd rather that than the show suddenly pulling a load of last minute reveals about how awful she is out of a hat. We don't know whether she started the fire at her old house or not, we don't know whether there's more to what happened her to her grandmother, we don't know if these dangerous fixations have happened in similar circumstances at the past. And without that, Irene, Marilyn and Tane continue to snip about her as if she's the devil's spawn makes me think badly of them rather than Eliza. Again, despite lots of predictions that she'd stab Harper or set fire to the house with Marilyn and Roo tied up inside, the only time she actively hurt someone was when she punched Scott. She didn't drag Harper into the bush or cause her to go into labour, she didn't make Alf have heart problems. Yes, she stopped them getting help, and that's dangerous behaviour, but people both on screen and off have been acting like she's a serial killer, which is ridiculous. Oh, and another reminder of how utterly incompetent and unprofessional social services have been: They're apparently "not surprised" at what Eliza's done, yet gave Roo no warning or support, which is downright negligent to a level on a par with Eliza's own. I'm glad Harper was there to support them all at the end rather than staying away like a little woman, and while Roo and Eliza don't end on a good note, I hope Roo realises she did all she could. Eliza remains ambiguous up to the end, with it unclear how much of her upset about being sent away was real. (She did, after all, have time to prepare after eavesdropping on Roo.)
Elsewhere, we have Mackenzie's cluckiness and Cash being rather casual with Lacey, although his straight talking is probably the best way to handle the situation. Justin doesn't seem to share Leah's myopic belief that it's all Lacey's fault, but it's not clear whether he still thinks the same about Remi and Sonny. I understand Theo being worried about Lacey but he still needs to look after his recovery.