Ok, not allowed. In that case scrap that idea OP.
But yeah like I said, it’s a good half an hour walk from the train station. If you are not familiar with Leicester then add 5 mins or so, for checking the google maps etc. so all in all 35 minutes, shouldn’t take any longer than that. Bear in mind it’s not the most discreet of locations especially if you are planning to visit her during the daylight hours.
Anyways, good luck.