34 years old and single am I (no marriage so far).
Being an artist,that influences my lifestyle.
would it be good to be betrothed to a woman who has already a daughter?
a git shabbes then.
While it is not possible to give practical advice on a personal level because I don’t know you or your situation. However if it is alright with you, and you are comfortable with the situation of having a step daughter, I don’t see a problem with marrying a woman just because she has a daughter. ( It would be advisable though to see that you get along with the daughter also). There could be a yichud issue, that you might have to be careful with since she is not your daughter.
May H-shem help you find your bashert in the near future