The girls are currently in Brisbane by their mother's side as she fights the mystery illness.
Jessica's girlfriend Ruby Rose is also with them.
"🌺🌷Loves of my life🌷🌺 Ruby in a butterfly headband, gifting carebear slippers to my pixie mama in matching flannel is my favourite thing about today🦄 💕" Jessica captioned a photo of Rose and Colleen from hospital.
In January Lisa shared a heartfelt tribute to her mum on Instagram.
"You have made our world a far more colourful, extraordinary, fun, crazy, loving and cool place to be," she wrote. "Without you, there is no us... it will always be the three of us forever and ever. For many lifetimes to come.... you are infinitely loved.