Very touching story and all so real.. Many of us have had parents who sacrificed so much just so we can have better lives. Parents are amazing! And in Islam we are advised time and again to treat them with love and respect and that try as hard as we can, we cannot ever do enough for them. Like in these ayahs(Surah 17):
23. And your Lord has decreed that you worship none but Him. And that you be dutiful to your parents. If one of them or both of them attain old age in your life, say not to them a word of disrespect, nor shout at them but address them in terms of honour.

24. And lower unto them the wing of submission and humility through mercy, and say: "My Lord! Bestow on them Your Mercy as they did bring me up when I was small."

Really missing my parents and hope and pray to see them soon!