Hope you are doing well.

Earlier today while we were looking at our travel dates noticed that my wife had been staying in the UK for more than 10 years now on multiple visas. She arrived in the UK on a Tier 4 student visa on the 11th of September 2011, with which she stayed in the UK until the 8th of May 2013.
Upon returning to India on the 8th of May 2013, she returned with a new Tier 4 student visa on the 11th of October 2013 (156 days of gap). She had been living in the UK ever since and switched to a dependent visa on the 10th of October 2018.
Not something we considered at first, wondering if she is now eligible to apply for ILR via 10 years (long residence) route?
Thank you very much for your help.

Regards,
Chethan