Legal Question in Family Law in Maryland

Since you are not married, there is no such time period. The only way you can make her sell the house is to file a lawsuit known as a partition action. This asks a judge to appoint a trustee to sell the property and divide any proceeds between the parties. The other option would be, if she's willing and able to carry a mortgage, and can qualify for a loan, for her to buy you out so you can pay off the current mortgage. Of course, you will have a continuing obligation to pay her child support until the child finishes high school or turns 18. You should definitely consult with an attorney experienced in this area of the law about this.

The two-year time period that you are referring to is called "use and possession". That does not apply in your situation as you were not married. That is only something that can be granted incident to a divorce. As for the house, it sounds like you will have to file a partition action. In that type of a case, the court can order that the house be sold depite her wishes.