Is SO being extra hesitant in from on IN-law so I get frustrated?

[NotPerfect]

Father in law in town for a few days. 

I can't tell if SO is being extra hesitant in from on IN-law so I get frustrated?

It is working.

She just revealed that she has been sick all day with sinus pressure.

So, now I am an @sshole.

But now I find out she did not take the Psudophed that I made a special trip to the store to get last night. Is this accidentally on purpose?

I had an Ah-hah moment when I realized that it is entirely possible that she is doing this so I  show the in-law that I am the problem not her.

I think I handled her throwing away the $500 check that I disussed with her last night. I believe I said to her,  while holding the envelope with the check in it "This company always send me checks in envelopes that look like junkmail"  I then put it on top of the microwave.  This morning envelope in the garbage. 

[PLEASE - NO RUN MESSAGES]

PLEASE - NO RUN MESSAGES This is a high level discussion board for solving ongoing, day-to-day relationship conflicts. Members may appear frustrated but they are here for constructive solutions to problems. This is not a place for relationship "stay" or "leave" discussions. Please read the specific guidelines for this group.