Imma give my take.
Kinda of like how some men will show off their trophy wives, she’s doing the same thing showing off his accessories on instagram over and over again.
While she does have the best intentions on being best friends, her actions is always showing off his passion, which she also loves.
That’s why she is being questioned on her relationship, cause her view on best friends is different from an outsiders view and based on her very close actions with the MC.
Is it wrong? I don’t think so. It’s like showing off my mates dishes cause they look delicious.
Would I hover near their shoulders or even sit behind them during their passion project?…..maybe not