The warmest of welcomes to you at such and incredibly challenging time in your life.
I'm wondering, in regard to the diagnoses, if a reason or suspected cause was offered? If a reason or cause was offered, this could be something for your mum to relate to. On the other hand, if you were diagnosed with a general form of depression and a general form of anxiety (with no obvious cause for your specialist to pinpoint), your mum may be under the illusion that 'there's nothing in particular wrong with you'.
There can be so many different causes behind depression and anxiety. This is something I've found from personal experience. Whether the causes or reasons are physically related (chemical imbalances or deficiencies), mentally related (certain belief systems, inner dialogue etc) or even tied into a soulful sense of life, all are worth investigating.
Not sure whether you're naturally a deeply feeling person. While being a HSP (Highly Sensitive Person) can be brilliant at times in life, this in itself can come with a whole stack of challenges. While high end energy or emotion can be felt or sensed as invigorating and highly motivating and positively exciting etc, when it becomes a stressful or anxiety inducing level of mental and physical hyperactivity or when only low end emotion can be felt or sensed for extended periods of time...this is a whole different story. If you do happen to be a highly sensitive/intensely feeling person and your mum's not, this could also possibly explain her inability to relate to how you're feeling/sensing certain challenges in life.
As Tony and Silver mention, it can help to find someone who has a greater sense of what you're experiencing. Finding people who can relate definitely makes some difference.
