Stay away and let her contact you. She already has a dad. I don’t know you, so its hard to be correct and if the following comments are way off the mark then I appologise. You let another man raise your daughter for 18 years, at his expense, and now you want to get close to her? Don’t you think thats a tiny bit opportunistic?
Now I understand that this may have been to play along with the mothers lies to conseal any infidelities, in which case I think you can ask her to get involved with the daughter. But as for rights, well the other bloke (parental dad as opposed to spunk donor) and the daughter are the ones whose considerations should come first.