Yes, she is a sequistered nun. The Poor Claires live with only the nessecities of life, they wake up in the middle of the night to pray, etc. Pretty much no communication with the outside world. Harry has an in with her mother superior, and visits once a year, always bringing food, stationary, etc.
CBS talked about her a little bit in a special a couple years ago, and told a story about how Shelly's mother superior called Harry when he was on the bus to the RAC to go play Uconn in the Big East Championship game back in 2003. "I'm on the bus, going to go get killed by Uconn" or something like that. She said they would say a rosary for them, and maybe that would help.
And the result is history, and was history being made.