Until a decree of divorce granted by a US court dissolving the marriage by mutual consent or after contested by both the parties, if obtained through exparte order, it is not valid as per Indian Laws. She will remain a legally wedded wife and the marriage can be held as subsisting.
If you plan to apply for divorce in India, you can do so only after completion of one year period after your marriage was solemnised.
If she is planning to lodge criminal complaint against your parents under section 498a, you have to engage an advocate and first get them enlarged in bail by obtaining anticipatory bail and then challenge her false claim in the trial court during proceedings. For a maintenance case against you, you can decide about challenging it accordingly.