What's up with Andrea's accent?

For one sentence, "yo voy al baño" she pronounced it like "joe boy al vaño" with Joe being like the English name, and the B in baño pronounced as a very soft cross between B/V. She pronounced the B in voy harder than the B in baño.

I've been in Mexico for four months and have not heard anyone speak like this. I asked chatgpt and it also says this accent is uncommon in Mexico