Tremendous condolences for your loss, brother. Words aren't going to provide much meaningful consolation, but I will tell you that you shouldn't blame yourself for not spending "as much" time with her as you may have wanted because ultimately, you were there with her, speaking and spending time. You were among her last happy memories, and it's clear to me that in those photographs she looked pretty happy.
Retain those happy memories. I'm certain that she would want to be remembered in exactly the way you presented her. Let your emotions pass through as they will, but remember her happy.
The pain of the loss is going to continue, but over time it'll get easier. Just be aware of this - it can hit at any time or place. It'll happen less frequently over time, but always remember to picture her happy. Keep her with you exactly that way.
Wishing you lots of strength, brother.
Thank you very much for these words, they are comforting to me, I really want to remember her always happy and smiling and that even in the greatest difficulties and challenges, she never failed to give a smile and do her best.
A love of a person, a caress, a tenderness, I want to try to be like that with people, not let life harden my heart. Thank you for taking the time to write this comment, it's been a great support for me.
A big hug.