California Sen. Dianne Feinstein has relinquished power of attorney to her daughter — even as she continues to serve in Congress at the age of 90, according to a report.

The Democratic senator — who is the oldest member of Congress — has faced calls to resign after health complications kept her away from the Capitol for months earlier this year.

Since returning to Washington DC, she has appeared frail and has had a number of public mental lapses.

Feinstein handed over power of attorney to her daughter, 66-year-old Katherine Feinstein, in part to help handle legal battles over her late husband Richard Blum’s estate, the New York Times reported on Thursday.

In one dispute, Katherine, Feinstein’s only child, is at odds with Blum’s three daughters over the ownership of a luxury beach house owned by Feinstein, according to the paper.