Look, I love home decor and home renovation quite a lot. But Gabby's "content" just isn't doing it for me.
Her decor isn't creative and her designs aren't cohesive. All she does is buy overpriced paint and then do a half-assed, sloppy paint job (which she is sure to rethink in a few weeks). She buys basic tat and stuffs her home with it. Her designs are as shallow and thoughtless as everything else in her life. It would never occur to her to change out hardware on items or refurbish items bought second-hand, or to get unique decor from boot sales, etc. She doesn't even pick up interesting items off Etsy, it's all mass-produced junk that she gets.
If she really likes design, I'd encourage her to go take some courses in it and get certified or something -- because her YT career won't last and she'll need something to fall back on.