I’m sure that has come as a bit of a nasty surprise, but that really is the standard rate depending on the experience of the solicitor concerned. Remember they’ve had to study and fund that to achieve their professional status, plus pay the insurances required by their regulatory body. It is also why people threatening legal action really do need a good case to pursue - no reputable solicitor would advise action without an almost watertight complaint. Whilst those fees will have poured more salt on the wounds, it does mean that the advice you’ve paid for lets you know where you stand, and will hopefully give you the confidence to shrug off SIL’s attacks. Step back and take stock of the situation, and recuperate. Hopefully it might calm SIL down and you can get back to your normal lives.