HG. I don't think in this case she will respond since you said you want to quit..etc etc.

But you can send her a text just saying I want to come in on Wednesday. Please text back and let me know you will still see me.

I've done the moody angry pissed upset crazy making quit thing before and I had to text email that T and say i still want to come in if you will see me...

Whatever has you this tense and fighting seeing her...needs to be dealt with or it will just continue to upset you