First off - congratulations on the new house!

While I empathize with your client feeling a dread at 'change' which can make any length of notice feel to SHORT specially when she is happy and loving your service .... the reality is that things do change in life and we have to accept those changes with grace .... in an industry where most contracts indicate only 2 weeks notice - 2 months or 60 days notice is LOTS of notice in this business.

Hugs and hopefully once she has had time to 'adjust' to the news she will come around!