Help please!! :)

Firstly...hello everyone and my absolute apologies for the questions I'm about to ask!! My partner, and my rock, has been walking the El Camino de Santiago for the past 3 weeks and started at the very beginning in St Jean! He started this amazing pilgrimage with a friend to raise money for a charity to raise awareness for a dear friend who he sadly lost to Huntingtons Disease! Unfortunately after day one across the Pyranees my partners friend had to quit the Camino after a bad fall so now my love is on his own! For the past fortnight he has been begging me to come out and finish the pilgrage with him! I didn't think it would be possible with my job but I have managed to drop everything so I can get out on Friday and walk from Sarria to Santiago with him I've looked at busses, timetables, taxis and am really not prepared at all as I didn't see this happening! If anyone out there will be arriving in Santiago this Friday (21st September) morning and wouldn't mind some company to Sarria, please let me know! I cannot speak Spanish and I'm a little nervous about the whole thing! Sorry for such a random post, as you may have guessed...I'm a little worried how to get to Sarria! Are there regular busses to Lugo? Also is it possible to walk from Lugo to Sarria as I cannot find a route!? My apologies again of this has already been discussed...am rather lost
Kerry

Thanks very much that's great!!! Makes things much simpler

Thanks so much Seamus! I'm really looking forward to the Camino, and I'm certain I'll be fine thanks for your advice...it's made me feel a lot more relaxed
Thanks again
Kerry