Some additional unsolicited commentary:
Tell your daughter to carefully consider the opportunity costs of a PhD in this field. After the 5-6 years to complete the PhD, she’ll have to do a postdoc - probably two (2-6 additional years). This is kind of the academic equivalent of a medical residency, but she’ll make even less money than the MDs. Tell her to look carefully into the job market. There are too many PhDs in this field right now. In the academic market, professors don’t retire -you have to wait for them to die. In the private sector, you really have to fit a very specific niche to get in the door. Sadly, when you do, it’s more often than not the PhDs that get canned when a project gets cancelled. The techs can usually move to another lab.