New to TRP here, so new I'm still very much BP but I am trying to learn. I am struggling with how to deal with a shit test from a girl.

Background is we met on Tinder, slept together, potential plate, however she's hovering on the border of LJBF but I let her know that it's a no from me in that regards. I don't want a LTR but want to keep her around as a plate, she knows this and she is in the same place so we both only want FWB.

Last night she was in a different city with one of her girlfriends (potentially got fucked, I don't care though), I was seeing and having a drink with a female friend of many years. She doesn't know for sure I was with another girl but probably assumes that I was given what I told her I was doing last night, she doesn't know whether it was platonic (which it was) or something else.

Potential plate and I texted a little yesterday and then I left her on read to allow her to get on with her day. Potential plate sent me a load of snapchats yesterday/last night which I did not open until this morning. I didn't reply to any of them. Potential plate texted me an hour or so ago:

PP: Hey, how was your night?

Me: Good thanks, and yours?

PP: Really good thanks, dying today though

PP new text: You didn't reply to any of my snaps?

I haven't responded to this, no idea how to really. Haven't opened it yet, just read it in the notification bar so that she can't see that I have read it. Although she isn't stupid so probably knows this. I know how not to deal with it; don't apologise, don't justify. I have no idea how to actually deal with it though?

a) Ignore and don't reply?

b) Reply but change the subject?

c) I know

d) A&A "Yes I was ignoring you"

e) How long has that been bothering you?

I feel like it is more difficult over text because there is no option for facial expressions or body language, and I'm not sure whether emojis would cut it (I'm trying to phase them out anyway). If it was in person I'd just smirk and ask her why she cares so much.

Any insights would be appreciated.