I am using Language Analysis on the phrase "Why don't you...(talk to your mum about it)? I have the following questions on this phras":

1. Does this imply-- why don't you, to get an answer 'why' she/he didn't talk to mum (ex. keeping it a secret from mum)

2. A suggestion (as an idea which came up during conversation)

3. Are there any other analysis of this phrase

Also, is the correct tenses (1) past continuous and (2) present?

Thanks for your feedback!