Is There Still Hope for Her?

Salaam everyone. My mom is in her mid-50s and doesn’t speak Arabic at all. She struggles big time to even learn the Arabic alphabet, let alone read the Qur’an. I’ve tried sitting with her so many times, but we make zero headway-she forgets the letters and sounds right after we go over them. Honestly, I think she might have some learning challenges, because even when she was little, her teachers kind of gave up on her. It’s the same now when we try English, and she’s lived in an English-speaking country for over half her life but can’t form basic sentences. She’s not really keen to keep trying, says she’s too old and there’s no benefit now. I’m stuck. Should I keep pushing her even if I see no improvement? Any advice would be appreciated, jazakum Allahu khairan.