oh yes! you’ve got a young hormonal bun on your hands! Of course we always recommend spaying as it solves not only behavior problems but health risks too. at 14 weeks she is right around the perfect age to spay- as long as she’s not super tiny. my vet wanted our daisy to be AT LEAST 3 pounds but preferably 4 just to reduce anesthesia risks. I would definitely begin thinking about having her spayed if that’s an option for you. unsprayed females tend to spray urine more than males as a territorial thing.
so besides spaying her- you definitely still have a ways to go before she settles. she needs to get used to the new environment and you. give her space and let her come to you. be patient, keep working on potty training, and let her know it is not acceptable to bite you. She will learn and over time you will both settle into your relationship. Most buns don’t like to be ignored so after a while of you paying no attention to her behavior she will come to you. go ahead and give her some pets if she seems like that’s what she wants but other wise do not handle her much. good luck!