She used to pray not covered properly and she did not recite al-Faatihah properly
Question

                I think my salaat is always wrong. Firstly, for years I was praying with my awrah exposed, and now I think my composure is bad, and I can barely get it right. Also for years I have been doing salaat wrong, once I found out it was through Sheikh Albanis information on salaat. I didn't say Al-Fatiha correctly for a long time. Do I have to make up all these prayers?.
Praise be to Allah.
      Firstly: 

    Covering the ‘awrah is a condition of prayer being valid. If 
    a person plays with his ‘awrah uncovered when he is able to cover it, his 
    prayer is not valid. 

    Reciting al-Faatihah is one of the pillars or essential parts 
    of the prayer without which the prayer is not valid. 

    For more information please see the answer to questions no.
    10995 and
    135372. 

    Secondly: 

    If a person fails to fulfil one of the conditions of prayer 
    being valid, such as covering the ‘awrah, or he fails to fulfil one of the 
    pillars or essential parts of the prayer, such as reciting al-Faatihah, due 
    to ignorance of the ruling and not intending to go against it, then there is 
    no sin on him and he does not have to make up past prayers. It was narrated 
    from Abu Hurayrah (may Allah be pleased with him) that the Prophet 
    (blessings and peace of Allah be upon him) entered the mosque and a man came 
    in and prayed, then he came and greeted the Prophet (blessings and peace of 
    Allah be upon him). The Prophet (blessings and peace of Allah be upon him) 
    returned the greeting and said: “Go back and pray, for you have not 
    prayed.”…

    Narrated by al-Bukhaari, 793; Muslim, 397 

    Shaykh al-Islam Ibn Taymiyah (may Allah have mercy on him) 
    said: 

    He did not instruct him to repeat the prayers he had offered 
    before that time, even though the man said: By the One Who sent you with the 
    truth, I cannot do better than that. Rather he instructed him to repeat that 
    particular prayer because there was still time left for it, and he was 
    enjoined to offer the prayer during its time. With regard to prayers for 
    which the time had already passed, he did not instruct him to repeat them 
    even though he had omitted some of their obligatory parts, because he did 
    not know that that was obligatory upon him. Similarly, he did not instruct 
    ‘Umar ibn al-Khattaab (may Allah be pleased with him) to make up prayers 
    that he had not offered because he had been in a state of janaabah, because 
    he [‘Umar] had not known that it is permissible to offer prayer with 
    tayammum (dry ablution, in situations where water is not available). And 
    when the woman who was suffering from istihaadah (ongoing non-menstrual 
    vaginal bleeding) said to him: I bleed a great deal all the time. What do 
    you think – should I stop praying and fasting? He told her to do wudoo’ for 
    each prayer, but he did not instruct her to make up the prayers that she had 
    not offered.

    End quote from Majmoo‘ al-Fataawa, 21/430 

    And Allah knows best.