Parenting involves more than the absence of any obvious abuse and providing for material needs.
A clue may lie in the word 'dote'. Uncritical parenting is not nurturing and can produce children (and adults) who are emotionally disconnected.
On top of this, her parents may have issues that you simply are not trained to detect but which your friend may have absorbed over the years.
Children are very sensitive recorders. They can't intellectually make heads or tails of the experiences they undergo, but they do retain the effects of these formative processes. The memories may be buried but the behaviors manifested from them are present for you to observe. This is the evidence of past deficiencies and a possible rout for future help.