I thought Twi's mothers name was Star Sparkle?
This has to be a proud mother.
One son is a Prince
One daughter is a Princess
Another son is the Hero of the Crystal Empire
And a daughter-in-law that's another Princess
I love these portraits.
(Not that the two are entirely mutually exclusive, but there are only so many hour in the day...)
In all seriousness, she looks like quite the sweet broodmare, and at least here she looks proud but not boastful. I think she's really happy for her kids, though perhaps a bit sad that they have to live so far away. If deep down she thinks that Equestria is much better now because her children are in high places then I can give her that much.
Oh man, when Cadence and Shining even think about having a foal Twilight Velvet will plant herself in the Crystal Empire and pester them worse than King Sombra. She'll make them chocolate treats and sunflower 'n saffron smoothies every day. Her life savings will be spent getting Barry Chrome and Bill Withers* to come sing for the couple. Then loudly (and all too obviously) she'll say how she's going to bed early, with earplugs in, and how she's so tired that no amount of noise could possibly wake her...
* Hey, I didn't even have to ponify his name.
Reminds me a lot of Rarity, lot of cheer and affection coming from her smile. You did a fantastic job capturing her mood perfectly, nice job!
I was going to speculate on whether Twilight's parents were nobles (they did get a princess for a foal sitter, and Twilight's childhood bedroom certainly looked impressive) but I suppose it's a moot point now that both of her children have the Prince/Princess title.
It's an interesting question, though. My personal take on it - and this is obviously just speculation that does not even rise to the level of headcanon - is that Cadance only became Twilight's foalsitter after the latter had been accepted by Princess Celestia as her personal protégé. Technically, I think Shining Armor's also just a prince consort, not a prince proper - although who knows how they do it in Equestria.
As for Shining Armor, I believe they introduced him as "Prince Shining Armor" to the Crystal Ponies last year, and the tourist from "Games Ponies Play" called him a prince as well, so I guess they don't quibble over titles with the consort idea.