If I paid the mortgage on my wife's home for the past 6 years, made repairs and kept up the landscape, can ask for a portion of that money back?

Under the laws of all states in this country with respect to the intended dissolution matter that you will be filing there is nothing preventing you from seeking reimbursement of the expenses that you incurred as to your wife's home and if marital assets were used to pay off the mortgage, you can ask for an ownership interest in it.