MashaAllah! Alhamdulile that Allah has taken you from darkness into light, and put you on the straight path.
I am also a revert to Islam, so I am going through the same thing at the moment....
One thing that I know is that Allah is the only who can open your mom's heart so no matter how hard you would like to make your mom accept Islam, nothing is possible without Allah's will. Make dua for her, and ask Allah (swt) to unveil her eyes, her ears and her heart so that she may understand why you have made the decision to become a Muslim, and that InshaAllah one day you can share that same joy of Islam with her. Ask Him for the patience to be kind to her, and to be understanding although she might not act like that in return. Ultimately, in Islam you love your mother three times before you love your father, so no matter what happens love her above all else.
The best advice that I was given, is that to be Muslim, is to be a Muslim not only through words, but through your actions as well. Our beloved prophet (s.a.w) showed such high character and integrity in his everyday dealings with other people, that non - Muslims that initially hated him before meeting him, came to love and respect him. (I'm sorry that I can't provide the exact reference for the hadith - but it is out there I promise you). Ultimately our actions speak louder than our words, so in your everyday dealings do things that Islam obligates you to do and in regards to your mom; be dutiful to her, respect her, love her, honour her and above all show her your appreciation for all that she does for you. I can't think of a better way in order for you to show her the positive changes that Islam has had on you.
If your mom is open - minded, and has a willingness to know more, giving her a book about the basics of Islam may help her to understand Islam.
Remember that Allah (swt) is closer to us than our jugular vein, and He gives those provisions to whom He wills, and He takes from who He wills also. I am so happy that you are Muslim and inshaAllah you live this life with your forehead on the ground, the Sunnah in your heart and the Quran on your tongue, and remain a Muslim forever. May Allah bless you and protect you on your journey.