Be very careful of asserting that someone deliberately stole another’s design. It may well be she has no idea of this whatsoever.
She appears to have simply purchased a logo design (that she has legitimately bought and amended) from a popular logo development platform, and customized it for your brand. This is certainly not “professional logo design” as any of us can do it, but that does not mean she stole a logo. I also have not seen whether she said she hand-designed logos–we have only your description of how she advertised her service.
If you visit a logo development site (these places are automated), several people can buy the same design legitimately. It is like going to a book cover store and buying a cover. There is still some work required by a buyer to then customize it.
Only if someone buys full rights to a design can that design be taken from the platform so that no one else can use it.
As an author, I can also sell the same article to several buyers if each one buys only “usage rights” and not “full rights.” To buy full rights of some logo designs costs more than $62. It all depends on how much the designer wants for each usage license.
So, it’s unlikely she stole it, but what she should have done is explain that she does not manually design them all from scratch.
I personally would not worry if someone had the same logo as me if they were across the globe, in a different sector and not my competitor. When you look at corporate logos, many multinational and blue-chip brands have logos that are as similar as yours. They did not copy each other but had the misfortune to come up with the same design.
I think you would be wise to request a job cancellation on the basis you will not use her work, but if you say to customer support that someone stole work and then she can prove she legitimately bought a logo design from a reputable platform you could lose your own account here and she will still be paid.
So, as a frequent buyer of both logos and other designs off ‘ready made’ platforms, again I clarify that when I buy my logo design, I have no idea which other global companies may have bought the same design–and it has not done my business any harm!
I would not expect original artwork for a low price… $62 is not as low as you can get here, but it’s still low per se, for a professional ‘designed from scratch’ logo.
But she should explain on her gig exactly how much of the design she does herself. However, if she has good reviews (I do not know if she does) then she is not a rogue seller.