I unfollowed Kate a couple of months ago. Occasionally, I'll see if she's snapped back to reality, but it doesn't appear so.
A few thoughts...
Kate sometimes uses a tactic called "sadfishing" which is, essentially, where people discuss their personal struggles (real or not), thus deepening the emotional, parasocial connection between follower and influencer. Sadfishing is very common amongst influencers as it yields an increase in social media engagement and, unfortunately, is a great marketing tool. I don't doubt that Kate has true, personal struggles and bravo that she sometimes candidly shares those feelings (eg., "I've been feeling a bit down."). However, I take issue when those sentiments are part of a sponsored video. No matter her intentions, it feels dirty. I suppose Kate isn't as bad as some influencers who sadfish then IMMEDIATELY segue into an advertisement (eg., "I haven't been feeling myself, but to make myself feel better, I do a little retail therapy at H&M. Use my code for 20% off, today!"). I hope behind-the-scenes, Kate has a support system (other than Yasmin) that builds her up, listens, and makes her feel valued when she is feeling down.
Often, influencers build their brand around relatability. Maybe they shop consignment. Maybe they love finding affordable dupes for luxury items. Maybe they don't use filters/Photoshop and show their true skin. Maybe they balance their luxury shopping with thrifted goods and DIY projects. I think, for many of us, we follow/followed Kate because of her minimalist, Parisian, effortless style that meshed well with her demure personality. At some point, it became clear that her goals either changed or her goals were hiding behind a façade of relatability in order to obtain the following and lifestyle she desired. Her cost-per-wear argument does not make the expensive item (and herself) any more relatable. Don't get me wrong - I see nothing wrong with working hard and saving for Hermès Oran sandals, Chanel bag, or another apartment/home. However, it needn't become one's personality or a strategy to set oneself apart from the rest. I know plenty of men and women (myself included) who have a penchant for the finer things in life but do so in a humble, non-braggart sort-of-way. Buy that bag or those sandals! ...but don't "casually" (purposefully) place them in every single one of your posts. That's not fashion or style, that is logomania as well as an ever-present [false] reminder to young, impressionable followers that logos, brands, and expensive taste equates beauty, likes, and relevancy. If she'd trust herself and her style, people will like her photos even without a luxury logo in frame.
I think we can almost all agree that the change we've seen in Kate happened as she spent, and continues to spend, more time with Yasmin. It is great (and healthy) to have friends with different backgrounds and personalities. BUT when that friend exhibits toxic traits and is making you feel less-than, that is NOT a friend. From the extreme weight-loss, to Photoshopping, to spending money left and right, whether she realizes it or not, Kate has allowed someone to steal her sunshine and play a large role in her life in just a short amount of time.
An undocumented hiatus (no IG posts and no YouTube videos) would do her some good. Go on a vacation to the countryside. Set aside the "influencing" for a month or two. Pick up some part-time, freelancing work. Reset. I'm not sure, but it is clear that the competitive influencer life is unhealthy.