She's been on Poshmark for a little over a year (August 2020) and only has a few sales. A few items were marked "not for sale" on October 30 and one was updated on November 5.
It doesn't seem like this account was particularly active - not exactly some kind of a super-seller. It seems a bit curious that someone would go in and make those few items unavailable for sale - it isn't as if this account has a huge number of followers or that there's much $. Not suspicious/nefarious - but it does suggest that someone knew she had an account and knew she had items up for sale and didn't want her account to suffer if she failed to ship purchases. (There are 200+ followers, but that is a minimal number on Poshmark, in my experience - someone who just joined the site but hasn't listed a single thing for sale will get that many followers within weeks/months).