Why is she saying clearly an "L" sound when pronouncing it? I thought "ㄹ" is somewhere between an 'r' and an 'l' but when it's at the start of the word and/or a syllable it's more of an "r"...
Also, the first 'ㅓ' she pronounces more of an 'o' and the second 'ㅓ' like an 'a' (as in 'ㅏ') and none of them is pronounced as they should be, as in 'eo'
Doulingo doesn't teach alphabet have you tried to go on websites like Learn to read korean in fifteen minutes? I want to explain but i need a korean keyboard ;-; I'll do it the best i can, the letter you mentioned has a rule to it. If it is at the end it makes a "L" sound. Do you get it? If not i can explain more :)