Going by Facebook posts, it looks like Noah's mother passed away earlier this month.
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A week later Noah made the IG post about selling packers to fund her trip to visit her family, which makes sense under the circumstances. It kind of makes me hope they broke up because if Neasa was out drinking and having fun with her friend all weekend while her fiancee is grieving alone, she's more of a sociopath than her sister. It's really sad for Noah, losing two close relationships in quick succession like that.