Ploy Theerada Mokkhasak is dancing with her grandmother Sumlee
Ploy Theerada Mokkhasak, 23, said she does a little jig every time she visits bedridden Sumlee, 79, to cheer her up.
Frail Sumlee – who needs an oxygen respirator – can no longer walk but waves her arms along with Ploy at her family home in Prachin Buri, Thailand.
Ploy's touching clip of her cheering up her grandmother with an enthusiastic dance went viral with more than five million views.
She said: ''Every time I go home I have to dance for my granny. Sometimes she opens her eyes and watches. Sometimes she dances as well with me.
''My gran has looked after me since I was young and we are really close to each other. She really loves music.
Frail Sumlee, who needs an oxygen respirator – can no longer walk but waves her arms along with Ploy
''Now she's getting really old and I want to make her happy, so I always dance for her.
''She smiles and dances and makes me happy. I believe thy everybody has to make their family happy while they are still alive.''
'I think that a little but of dancing and music brings a lot of joy to her'
Sumlee has spent the last year in bed with failing health but before that could walk around.
Ploy, who runs an online shop, added: "I think that a little but of dancing and music brings a lot of joy to her and helps her to live longer."