There are on-line dictionaries, like
Lancashire Dialect Glossary F
that might assist you, plus John Wright's vocabulary.
Just Google his name and some helpful links will come up.
I have revised my guess about the last two lines from:
Zo pleased to zee her love vor'n zuch— .......[They were] so pleased to see her love for him such (=so strong)
To watch'n leek a cat. .............................. (how sweet) to watch him like a cat [looks at its master]
To: .[They were] so pleased to see her love for him such (as to cause her) to watch him like a cat [looks at its master]
Thank you all very much!
Do you have any idea what fath could mean?