Gifting acreage question

I am 80 years old and want to give my ranch in west Texas to my daughter now while she is young enough to enjoy it. I want to keep the mineral rights until I die-there are producing oil wells now. My lawyer asked if I want to keep the surface rights too? then went on vacation during which time I am to think about it. So…thinking…if i keep the surface rights too, what am I gifting her? (It will be a cattle ranch for her.) Thank you very much for enlightenment.