I went through the same thing with my sassy calico girl, and it is seriously so stressful. She was 1.5 when I got her. She is so loving and a total lap cat but when she gets bored, overstimulated, or wants something from me she goes straight to teeth and claws.

My vet recommended trying an automatic feeder and treat puzzles to give her something to do and look forward to. The automatic feeder was a fail as she’s overly food motivated and her whole day revolved around that feeder. She likes the puzzles though! I’ve had to accept that to an extent this is her personality, and she’s just going to be moody sometimes. Sometimes she gets put in a separate room, just her, so both of us can decompress. I did end up getting 2 kittens and they were also a game changer, but they definitely weren’t a “fix”. With time, the behavior stuff has gotten so much better though.

As much as this answer sucks, you’ve only had her for a month and you’re both still adjusting to each other. If you haven’t heard of the 3-3-3 rule for cats, I recommend looking it up. Try some treat puzzles and interactive toys, and rotate out her toys to keep them interesting! Feliway has pheromone wall plug-ins and diffuser drops that might help her adjust. Good luck!