WOMEN;rite theres this girl that keeps bombarding me with phone calls an txt's,and i no she wants me,although!

im 27 and ready to start settling down a little,i allready have a child to a previous relationship and dont want anymore for another few years yet,my problem is that she's only 19,although she is very mature for her age and has a job i feel she's too young for someone my age..am i being silly or should i steer well clear!!!