You should file a Petition to Terminate Child Support based on Changed Circumstances. I understand how you feel about your daughter, but if your obligation to pay child support was contingent on her being a full time student in college, you should not have to pay child support to her mother for your daughter's benefit if she is no in school full time.
If you are paying alimony to your wife, You should also file a Petition terminate alimony because of changed circumstances, or combine this request with the first Petition. If she is starting her own business, she should be working and be financial self supporting. Ask the Court if they have forms for this so that you do not have to get an attorney to do this for you.
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