Allah forgive me if I am sinned.
Alhamdulillah sister that yr faith is intact. Allow me to help you see a whole new perspective in a positive way.
Subhanallah, your seemingly predicament is actually the biggest Rahmah that a Muslim could possibly be in. Imagine this, you are in similar situation when Rasulullah(PBUH) and Sahabat were facing in the beginning when they try to convince people back to the right path. Without the need to elaborate further, no amount of explainations, no amount of arguments, no amount of good examples can change another person's(in this case yr family) perception if Allah do not Will it to change.
The longer yr predicament, the bigger the Rahmah because one half of Iman is just to persevere and be patient(Sabr). Continue facing these testing times with implanted knowledge that the longer you have to go through, the more Allah's love for you. I am pretty confident that if you are able to have it implanted in your heart and soul with full sincerity, you would soon be smiling...of course it is easier said than done. And you soon be smiling not because situation have changed but because you have accepted the fact that it is Allah's perception of you is of the utmost importance.
To practice Islam is not difficult, it is the people that made things seemed complex. Allah is ALL forgiving and He understands us more than what we perceived or imagined.
There are options when faced with situations. Just perform your obligation to the best of the knowledge that was taught to you and slowly build up. You will never be wronged for the little that you know that you put into action. What counts is your utmost sincerity. As for being discreet in your Solat and faith, use hikmah(wise discretion) and know that in a lot of Islamic teachings, avoidance is better that confrontational and only you will know how to bacause no one knows your environment better than you do.
Every single moment that made you think of Allah, Dua the very things that you want to see changed. Istiqamah(consistency in the belief that Allah is All Controlling) is a prime factor. Remember that Sabr is half of Iman, the other half will come to you in the most mysterious ways as long as you are sincere and perform all obligation to your level best.
While getting advice from friends and online, the best is still to get from Ustadz or Ustadzah in person because it is the fastest means of transfering and receiving questions and answer two way.
AllahuA'Lam.