Nope. 'ch' is pronounced as /h/ between two vowels. 'Mh' is pronounced like a /w/ or /v/, depending on the vowel. And 'th' is silent before long vowels or at the end of a word.
No I don't think it's way off. I hear this 'blend' in the north of Connacht. To me she sounds almost Ulster-like (Western side) with oíche but Connacht-like with mhaith. I've heard this in Connacht but not in Ulster. Is she from Leitrim (or Sligo maybe now I've listened again more closely)?