Hello,
I can understand your concern for your daughter and i will do my best to solve your concern.
According to the information provided by your side, i can say that as
fracture is ruled out already, its not to worry at this point of time. Swelling can occur due to bruising and it will remain for few more days (8 to 10 days).
So don't worry, everything is fine, just take anti inflammatory drugs, keep the leg elevated to reduce swelling, apply antiseptic ointment like betadene to prevent infection, take
vitamin C tablet for better and fast healing, drink vitamin C containing food like orange, lemon juice, etc.
Your daughter will be absolutely fine, so don't get tensed much and do as i suggested.
Hope this answers your question and let me know directly if you have any further relevant queries, i will be happy to answer you.