rumors/possible leak stated frost might have a cameo in the story mode.

possibly finding her way to the Lin Kuei temple!

but like i said, rumors

Not really and Jacqui is one of the new generation characters, so Frost can't replace her since Frost is an old character. If she were to replace someone, it would be frof the veterans side.

I really hope she makes it as DLC. If she doesn't at least she was in the comic and didn't die.

The only realistic chance is another Kombat Pack. Without it she probably has 10 sec cameo and that will be it. Which she will probably be killed or beat up again. I just don't like her chances at this stage. From what I can tell not many people are blowing up Boon twitter with Frost requests either.

She might be in the DLC and maybe the mobile

Hopefully she makes it into the next Kombat Pack or batch of DLC characters and surprise the shit out of everyone just like Tremor did.

She has a 0% chance. Even if they had a 2nd Kombat Pack i doubt they'd put her in it.

If they do have another Kombat Pack. I think it is a given they will put a female character in it. Looking at the options which are very limited. Two realistic and likely only option would be Frost and Li Mei. Jade and Sindel could be options. I see them holding those characters out for a MK11 return.