I read a tweet from someone I've been following and trust from last nights premiere, but it looks like it deleted now.
Hopefully it's true but everything else I've found has indicated that they start a relationship in this film.
I also read spoilers from the junior novelization which seems to cover only the first half of the movie and there's nice Sharon and Wanda parts. I'm excited. A thing to note is the novelization cut out some spoilerific stuff (which had to do with Sharon) so I feel like she's going to be in the film pretty consistently.
All I really want to know is if we will see her use her weapon and wear her outfit from all the promo pics and some of her figures. It seems really strange they would promote her so much in that outfit and with that weapon if she doesn't do anything with it in the film. They could have easily replaced her with someone else on all the promo material and Marvel is hardly lazy to use old drawings/art, etc --- especially when it's not in the film. I don't think they've ever done that.
I am holding out hope we see that outfit and she atleast hits someone with her weapon once in the film... lol
She doesn't even need to be a big part of that fight.