Final answer:
Malala's concerns about her medical bills were addressed through a combination of government support, ambassador assistance, and fundraising efforts.
Step-by-step explanation:
One of Malala's concerns about her medical bills was addressed through a combination of different sources. After the attack, she received medical treatment in Pakistan and was then flown to the United Kingdom for further treatment. The Pakistani government initially covered the cost of her treatment in Pakistan, and then the United Arab Emirates ambassador to Pakistan offered to cover the expenses for her treatment in the UK. Additionally, the Malala Fund, an organization founded by Malala and her father, raised funds to support her medical expenses and education.