Being right next to the little banana when he accidentally turned everypony he knew including himself into the opposite sex was rather surprising at first to the shy timid and kind mare. The very moment she felt her small snoot grow into a big ol muzzle took her by surprised. Combined alongside all the other factors of her or his new form she was rather peeved as to how to react other than complete alienation from her new male form. The sense of power she carried and physical strength to further back such brovado merge with what confidence she had in her mind to force herself to tolerate her new form. "He" in turn apart from having to adjust to his new stature still had to help his little brother now turned sister figure Tommy also gain control and stability from his own change into a mare as a result of his magical fumbling. For a human not use to being a pony to now being of a different species and the opposite sex, the little one was silent and murmuring with a new mixture of emotions common for "her " new state. All Tashie could do was keep himself foccused on his tasks as a maid errrmm……butler for the time being to ensure the little one was ok. At least until the Prince's/princesses parents could whip up a spell to reverse the small little accident that has happened.
Though she could not help but think of how her husband would think of her if she were to appear before him as she was now. An even more bottom heavy stallion with similar shy timid demeanor approaching him would be certainly a throw off at first. That is even to say that he wasn't affected by what just happened to her happen to him as well. Ah well, for now guess she can keep her little brother "sis" happy and company and allow the new filly to play with her "his" larger snoot in a booping contest then.