She's honestly fairly neutral with her size and weight. Because she has been on the heavier size for her entire life, she's come to accept that aspect of herself as a consequence of her rather indulgent lifestyle. The main part of it that really embarrassed by are the knock-on effects of being that large and that heavy. Things like bumping into people, toppling things with her hips, breaking chairs, etc.

The gas stuff just mortifies her, but it's not something she can control easily.