Seems to be an STP operating only as far as Bolton. Where is your partner attempting to travel from and to? (Understand if you'd rather not divulge that!)
Real-time train running information for 2L67 2120 departure from Blackburn to Manchester Victoria on 07/02/2023. From Realtime Trains, an independent source of train running info for Great Britain.
www.realtimetrains.co.uk
Manchester Vic to Hag Fold. This journey has no replacement at all which to me seems pretty unacceptable. It's not even advertised anywhere easy to find on Northern's website but I did just find it on Journey check.
"
Planned engineering work will take place between Daisy Hill/Wigan Wallgate and Bolton/Hindley on Monday, Tuesday, Wednesday and Thursday, from 22:45, Monday 06 February 2023 to 05:45, Friday 10 February 2023.
Some services will be replaced by buses throughout.
Monday 6th to Thursday 9th February
The 21:20 Blackburn to Southport service will be diverted to terminate at Bolton. An additional train service will run between Wigan Wallgate and Southport"