You have no idea how devious this sil is. I’ve been dealing with her for 40 years and it’s been a headache about that long, but it’s been getting worse lately.
The only one in all this that is important is dmil. She MUST be protected and taken care of. Bless her heart I bet she’s not even aware all this is going on. Why else would sil refuse to put her on the phone with the broker this morning?