Daughter in law is a valuable asset to my company

Tomorrow will be her last day until after the new year. Suddenly had to make a decision give her maternity leave early or let her go. Hopefully they have money set aside to offset the pay difference of full time to short term disability which I think is set at either 66% or 75%. Her husband has threatened to sue me because I won't give him any of his mothers belongings. Key word is his MOTHERS BELONGINGS just saw her and she is still with us