Duty or do me

Ok so I'm 40 she is 27 we bonded over a common loss but she has been giving the signs that I'm ok to go for it. However we have been in the grieving friend mode and I have taken a bit of a father figure role. I want this and another situation and I'm shooting my shot my worry is of things to don't stick I don't want to hurt the good I've done mental health wise. Younger ladies please weigh in on this