There are people with genetic predispositions to certain cancers. It’s the reason that Angelina Jolie recently had a double mastectomy. I imagine they want to know if there are specific threats that you in particular are vulnerable to so they can keep an early watch for them.
Second possibility is that you and your daughter are hot and they seek to secretly clone you.
I would second this. If there is a history of breast or ovarian cancer, they can use the DNA screening to predict if your are likely.
I know a couple of women who have been able to catch their breast cancer really, really early with increased monitoring.