Wife eligible for interview waiver

My wife was on F1 visa, which has expired last July. She has valid H4 visa.

Does she have interview waiver?

She should be eligible for IW however note that IW is at discretion of the consular officer so they can still call her for interview.

https://travel.state.gov/content/travel/en/News/visas-news/important-update-on-waivers-of-the-interview-requirement-for-certaing-nonimmigrant-visa-applicants.html