I'm here to confirm that Minthara no longer requires specific conditions to be recruited and can now be also recruited even after raiding the Grove.

FUN FACT; If you loot everything off of her in ACT 1, she'll spawn in Moonrise with a 2nd set of her own camp clothes, thus you can own x2 of her own clothes to match as a couple! grin
[Linked Image from i.imgur.com]