I work in media, so in some ways I do understand why a brand might book Lizzy - accumulated lots of followers, more so than other UK bloggers of that ilk (premium fashion ie. Expensive, not actually indicative to style, and high income) so your brand will reach a LOT of people. However, as showcased by the river island campaign, that does not necessarily mean quality reach. It doesn’t mean you’ll reach the right people. And any brand that looks somewhat closely at her comments will see that - she has a big number, but her likes and engagement figures have been diminishing while that one follow figure grows. Essentially, she doesn’t have a leg to stand on under close scrutiny. So, she deletes her comments to get rid of the evidence.