Is a female student sinful if she refrains from marriage to dedicate herself to obeying her parents, worshipping Allah, and studying medicine, and does this action of hers displease Allah?

Marriage may be obligatory for whoever fears falling into indecency by not marrying. It should not be abandoned altogether, as that would contravene the prophetic guidance and miss out on many benefits. Therefore, it is advisable to proceed with marriage due to the help it provides for worship, honoring one's parents, and studying medicine, along with the necessity of choosing a righteous man of good character and religious commitment.