Her mastery of those things may not have been as good as the things she had learned much earlier, but she was still able to use them quite well to be able to take on other roles should there ever be a need to do so.
It was possible that she could handle a close-range fight, taking the attention of a Spirit or Evil Spirit just like Sloane was used to doing, but she did not have the same level of experience as him, and she did not have his ability.
If she was going to be able to get better than him, then she needed to be able to have more tools available to make use of so that she would not be stuck to one style of combat.
Fighting like that may have suited her quite well as a result of her background and experiences so far, but that would only expose her to more unneeded dangers, and it would be a waste of her potential.
She was very light on her feet, flexible, dexterous and had high agility just from her normal physical capabilities without anything else being added to it.
