You can bring her to see doctor to get advise and treat her blister. You can offer her pacifier, its really not a bad thing, it can help her soothe herself and its comforting thats why she suck her finger. She needs pacifier.
She used to be on pacifier but she didn't like it after a while. She will throw it away 😂 She moved on to her fingers after that.
Alright, will bring to the doc
Gan Si Min