Hi janix, do you think that even if the person is praying for help in liking herself so she can get out there more... but nothing is still happening, that God has a reason for it?
God wants you to like yourself sis. He doesn't want you (or your friend) to be stuck in that mindset forever. Maybe you need to go through a process, the journey is painful but at the end God wants you to reach your goal (a better version of yourself). Think of a caterpillar, kailangan nyang magdaan sa different stages in life but the design is for it to be a butterfly in the end.
Here are some insights which helped me have better self-esteem (when I have those down moments)
1. When you look good you feel good. It could be as simple as wearing nice underwear (kahit hindi naman kita ng madlang pipol), or putting on light make-up, or wearing a dress that makes you feel pretty, or getting a nice haircut. Maraming ways. You don't have to look like a model pero yung konting improvement lang will have an impact on your confidence na.
2. Exercise - releases endorphines (happy hormones).
3. Eat bananas and other endorphine-releasing food - happy hormones again
4. Follow your heart - do something that you love. When you develop your talents/skills you'll feel happier and more empowered. You'd feel you're going in the right direction.
4. Help others. Minsan we need to divert focus from ourselves and reach out. Try it, kapag may tao kang napasaya mas masarap sa pakiramdam, ang result babalik sayo yung happiness na naibigay mo, minsan double and three-fold pa.
-Kaya siguro iba ang high na naibibigay ng mga volunteering activities: Gawad Kalinga, Habitat for Humanity, etc.

, or even as simple as comforting a friend in need.
Minsan when I look back and remember the times that I didn't like myself, it was because I was thinking too much of what other people think of me, and because of selfishness. So the antidote - generosity, and self-awareness/presence of mind.
Example: When you walk into a room full of people, do you think "Here I am! Look at me!" or "Here YOU are! I'm so glad you're here!" Tip: When you're worrying about what other people think of you (Am I pretty enough, am I interesting enough?) -- DON'T. They're not thinking of you. They're thinking about themselves. That's true 95% of the time, according to Dale Carnegie, author of "How to Make Friends and Influence People".
Be interested in other people. When you're engaged in a conversation, do you show interest in what the other person has to say, or are you more interested in saying the right words and making the right impression? Don't take yourself too seriously. Laugh at your mistakes.