Swamped

You hold a finger to your lips to motion for silence - really more of an offer. You'll be quiet if she does. Hopefully the mask doesn't mute the effect too much.

She simply glares at you without a word, then motions for you to get out of her way.

So she's not willing to make a scene. Or at least, not eager to. But you want to talk.

You can't remember any hand sign for "parley", so you settle for making a walking motion with your fingers, then mimicking a mouth opening and closing.

She responds with one finger and a narrowing of her eyes. Not interested, apparently. You could try to follow her anyway, but she probably wouldn't take that very well.

You can see one option left for persuading her. You have to convince her that the conversation has something to offer her, as well.

Of course, whatever offer you make, you'll need to be able to suggest it with just your hands.