Yes, if you have signed the marriage contract. Otherwise, she is a stranger to you and you are not Mahram to her yet.

I have got engaged one month before with a good practicing well behaving muslimah. I would like to ask you that can I speak or chat with her in order to understand her better without speaking in a tempting manner or going into unnecessary issues.Asking this question bcoz she also interested to know me better so that there wouldn’t be any conflicts after the marriage has happened.

Engagement | December 25, 2014 2:42 pm
Previous

I’m interested in a sister that goes to my masjid – Is there a permissible way for me to approach her, what can I do to get a marriage meeting with her?
Next

A girl has met a boy for marriage. She liked the boy as she found him mentally compatible with her but the boy doesn’t offer all prayers but offers only Friday prayers.The parents are very much interested that she should marry him as everyone they enquired from talked high of the guy. Can she marry a boy who doesn’t offer all prayers but only Friday prayers?