What is Julian of Norwich the patron saint of?

For much of her life, Julian lived in permanent seclusion as an anchoress in her cell, which was attached to St Julian's Church, Norwich.

Julian of Norwich
Major shrine Church of St Julian, Norwich
Feast 8 May or 13 May
Major works Revelations of Divine Love

Know more about it here. Simply so, what is Saint Julian the patron saint of?

Patronage. St. Julian was invoked as the patron of hospitality by travelers on a journey and far from home pray hoping to find safe lodging.

Beside above, why does Julian of Norwich have a cat? She was allowed a cat for purely practical reasons; To keep the rat population at bay. Unbeknownst to the outside world however, she had a close relationship with her beloved cat. They would sit for hours in Julian's garden in contemplation and prayer.

Then, what did Julian of Norwich do?

Julian of Norwich. Julian of Norwich, also called Juliana, (born 1342, probably Norwich, Norfolk, Eng. —died after 1416), celebrated mystic whose Revelations of Divine Love (or Showings) is generally considered one of the most remarkable documents of medieval religious experience.

Which saint said all will be well?

Little is known of her life. Even her name is uncertain, the name "Julian" probably originated from the Church of St. Julian, Norwich, where she was an anchoress. It behoved that there should be sin; but all shall be well, and all shall be well, and all manner of thing shall be well.