Hi,
It is depend on you and your faith about His promised on the Old Testament which is in Malachi 3:10 - Bring the full tithe into the storehouse, that there may be food in my house. And thereby put me to the test, says the LORD of hosts, if I will not open the windows of heaven for you and pour down for you a blessing until there is no more need.
Tithing does not measure of how much is your tithe but it is about the faithfulness. He said put me in "test"...if I will not open the windows of heave to pour out his blessings. I had many experiences and testimonies about tithing...Since, I've read and my mother shared me that verse I tried my best to be faithful with my tithing and God didn't come short with His blessings. When I was in high school, if my mother give me 10 pesos for a week, I kept the 1 peso and that's my tithe for Sunday. When I went to college and had a 300 pesos weekly allowance, I kept the 30 pesos as my tithes. Try and God's blessings will overflow. Just 2 weeks ago, my husband had a big testimony about his tithe as well. He earned $200 from his saturday work and he is thinking to send me the $20 for my sister's medication than to give it as Tithe, but then when he arrive at church, he chooses to give it as a tithe. After the church, he went to the junk yard and look for a part of a car, there was a woman who gave him $30 just for a asking a direction. All I can say, is try it and you will surprisingly amazed of the blessings God will give you and your daughter. For God, a promise is a promised. God bless you and your daughter.