Hi Thomas,

You said:
Who is called the patron saint of missions even though she never left her convent?

There are four patron saints of missions:

1. Francis Xavier
   http://www.catholic.org/saints/saint.php?saint_id=423
   
   
2. Peter Claver
   http://www.catholic.org/saints/saint.php?saint_id=94
   
   
3. Therese of Lisieux
   http://www.catholic.org/saints/saint.php?saint_id=105
   
   
4. Leonard of Port Maurice
   http://www.catholic.org/saints/saint.php?saint_id=4247
   

You are probably talking about Therese of Lisieux who is also a Doctor of the Church.

You said:
Who is the sister who won the Nobel peace prize for her work with the poor of India?

That is Blessed Mother Teresa of Calcutta. She will probably be canonized a saint some day.

Here is the web site that is promoting her cause for sainthood:

http://www.motherteresacause.info

Hope this answers all of your questions,

Mike