I would be inclined to give her the benefit of the doubt if you think she is exaggerating her improvements costs. just get it off your plate. It is not worth a family rift. You asked her for a lot of information, but she may still not be clear as to what you exactly want.
I think she was giving partial answers in order to NOT be adversarial, as she may not have had time to pull all that together and did not want to ignore the inquiry. OK - ? possible?
yes, her son got a cut rate place to live. Is that worth a family feud? It was a family member. She wasn't collecting rent and pocketing money. You could state a case that sister owes her "rental" income, I wouldn't go down that road. that is why the 3rd brother wants out of the whole thing. and she should too.
Just had meeting with SIL and Brother. While we all agree she should be more transparent about the LLC and we should have, at the very least on an annual basis, been apprised of our interests, we are going to give her the benefit of the doubt, for now.
She indicated she didn't have time right now, but remembering she is a CPA, we should know she really is very busy right now with tax deadlines looming and she has been known to have three jobs at the same time. This is not really out of character.
Secondly, we decided we should be more clear about what information we want to know, why we want to know it, ask some general questions about taxes and then ask when she thinks she could provide that information.
So yes, a couple of steps back, take a breather and try again. If that doesn't produce results we will go from there, but Brother seems to think there is no reason to panic, yet.