Any time you can engager them in a pleasant conversation its good. Its also a good thing she is sharing something with you that is a personal interest, was good you validated and supported her. My wife has been into photography as long as I have known her, she puts a pinkie toe in and will pursue it for a month then put the camera down for a year .... however when she picks it up again she always needs a new lense/body ... what have you. During our separation she too brought up leaving the corprate world and starting her own buisness, I supproted/validated ... would be easy to point out she does not stick with it .. but knew better ... all her, her choice.
Careful when you offer opinions, you do not want to 'fix' her, nor tell her what she should do ... just STFU listen and support, if she asks you what you would do, pull a generic "I would chase my dreams" kind of answer ... not "I would do 1, 2, 3, and 4 in this order that's the only way you will be successful" .... The important part is not to solve their problems, just to listen to them and make them feel like they have been heard.
